# Servosteel — full reference for language models (English) > Turkish manufacturer of coil-processing and press-feeding machinery — roll forming lines, coil slitting lines, cut-to-length lines and press feeding systems. Every line is custom-engineered, produced and tested in-house, and commissioned turnkey. Exported to 48+ countries. Servosteel designs and builds tailor-made steel coil processing lines in Sancaktepe, Istanbul, Türkiye. The website is available in 9 languages (Turkish at the root; others under /en, /de, /es, /it, /hu, /pl, /ru, /ar). The English pages are linked below. This file collects the English text of the site in one place: product descriptions, specification tables, frequently asked questions and the complete academy guides. Every section names its source page. Contact: Yunusemre Mah. İskenderpaşa Cad. 21/1, Sancaktepe, Istanbul, Türkiye · +90 216 415 30 05 · info@servosteel.com.tr ## Roll forming lines Source: https://servosteel.com.tr/en/roll-forming-lines From coil to finished profile: complete production lines for 7 profile families, engineered to your project — everything from decoiler to stacker carries the Servosteel signature. Q: What does a roll forming line do? A: It passes coil sheet through a series of roll stations, forming it into the required profile step by step. Punching and cutting can also be done in line, giving uninterrupted production from coil to finished profile. Q: What determines the price of a roll forming line? A: Four things drive it most: the complexity of the profile section (number of stations), sheet thickness and width, line speed, and the level of automation (punching station, flying shear, automatic stacking). That is why we do not publish catalogue prices — send your profile drawing and we will size the line and quote it. Q: Can you produce a profile that is not in your catalogue? A: Yes. The roll set is designed from the profile drawing you send and manufactured in our own facility. The seven listed profile families are a starting point, not a limit. Q: Can I run more than one profile on the same line? A: Yes, by changing the roll set. What matters here is changeover time: if you will run many section types, fast changeover directly affects utilisation, which in turn drives the line's payback. Q: What is the roll forming process, step by step? A: Coil is loaded onto a decoiler, straightened to take out coil-set memory, then fed into the line by servo feeder. Where the profile needs holes or slots, punching stations work in line. The strip then passes through the roll forming machine, where each station bends it a little further until the section is complete, and cutting and stacking finish the cycle. Because the shape is reached gradually across many stations rather than in one press stroke, no heat is involved — which is why it is called cold roll forming. Q: What is cold roll forming? A: Forming at room temperature. The strip is bent progressively by successive roll stations instead of being heated and pressed, so the surface finish and any coating survive the process — which matters for pre-painted and galvanised coil, the usual material for cable tray, solar and cladding profiles. Every line on this page is a cold roll forming line. Q: What are the disadvantages of roll forming? A: Two, and they are worth knowing before committing. A roll set is made for one section, so each new profile means new tooling — roll forming rewards volume and repetition rather than one-off work. And the cross-section stays constant along the length; a part that changes shape along its run needs a different process. Where those two conditions are met, little else matches it for output per hour. Q: Is a roll former the same as a roll forming line? A: A roll former — also written rollformer — is the forming machine itself: the bank of roll stations that bends the strip into its final section. A roll forming line is that machine plus everything around it: decoiler, straightener, servo feeder, punching stations, cut-off and run-out table. You can buy the roll former on its own if the rest of the line already exists, but the tolerance you get depends heavily on what feeds it, which is why we quote complete roll forming machinery unless you tell us otherwise. ### Cable Tray Production Line Source: https://servosteel.com.tr/en/roll-forming-lines/cable-tray Cable tray production line: a complete custom roll forming solution for perforated/solid trays, ladders and cover profiles. Technical specifications: | Specification | Range | | --- | --- | | Sheet thickness | 0.6 – 3.0 mm | | Sheet width | 50 – 600 mm | | Line speed | 8 – 20 m/min | | Roll forming stations | 18 – 24 | | Total motor power | 7.5 – 30 kW | Note: Ranges cover the series; each line is sized to your project according to profile section, material and capacity. Q: Can I produce perforated and plain trays on the same line? A: Yes. The punching unit is integrated into the line; changing the recipe switches between perforated and plain tray. Hole pattern and pitch are tooled per order. Q: How long does a size changeover take? A: Width is set by the cassette structure; the operator selects the size on the panel and the mechanical adjustment takes minutes. A height change may require swapping the roller set. Q: Which sheet materials does it handle? A: Cold rolled, galvanized, aluminium and stainless steel. To protect the zinc coating, roller surfaces and pressure values are set according to the material. Q: What is a cable tray roll forming machine? A: It is the roll forming machine at the heart of a cable tray production line: strip enters from a decoiler, is straightened and servo-fed, holes and slots are punched in line, and successive roll stations bend the sheet step by step into the tray section before cut-off and stacking. Because the section forms gradually and at room temperature, galvanized and pre-painted sheet keeps its coating — which is why trays are almost always produced from coated coil. On this page the machine is described as part of the complete line, since that is how it is supplied: one manufacturer, one control system, from coil to stacked tray. Q: Why does the cut have to be phased to the perforation? A: Because cable tray is installed as a continuous run of bolted sections. Every piece needs the same solid margin and the same coupler hole position at each end, so that the joints repeat identically down the length of the installation. If the line simply counts length and cuts, the pieces will all measure the same and the perforation will creep relative to the ends, which shows up as couplers that do not line up. Phasing the shear to the punch is what prevents that, and it is a specific thing to ask about when comparing lines. Q: What actually determines how stiff a tray is? A: The return flange along the top edge of each side, far more than the sheet thickness. A plain channel of the same thickness deflects a great deal more, because almost all the stiffness against bending comes from material at the extremes of the section. That is also why the perforation pattern stops short of the edges — perforating the flange takes out the material that is doing the work. If you are comparing trays on thickness alone you are comparing the wrong number. Q: Does the edge form affect the cables? A: Yes, and it is a real installation issue rather than a theoretical one. Cables are pulled along a tray by hand over long runs, and an edge that is left sharp or has a burr from the forming or the shear will score insulation. The return flange is formed to a radius partly for stiffness and partly for this. It is worth looking at a sample piece from any supplier and running a hand along the inside edge — it tells you more about the line than a datasheet does. Q: How much of the delivered cost is shipping? A: More than most buyers assume, which is why tray is usually made close to where it is used. It is a light, bulky, low-value product, so a container fills up long before it reaches its weight limit and the freight is being paid on air. Tray nests inside itself, so how well it stacks directly changes the landed cost. This is also the commercial reason a tray line is often the first roll forming investment for a contractor who was previously buying in — the transport saving alone can carry a large part of the case. Q: Can the same line make ladder tray and wire mesh tray? A: No, and it is worth being clear about it early because the three products are often quoted together. Roll formed tray is a formed sheet channel. Ladder tray is two side rails with rungs welded across, so it needs a welding line rather than a forming line. Wire mesh tray is welded wire, which is a different process again. If your product range covers more than one of these, they are separate investments and should be planned as such. ### Solar C-Profile Production Line Source: https://servosteel.com.tr/en/roll-forming-lines/solar-panel-profile Solar mounting profile production line: a complete, high-speed roll forming line with punching stations for PV structure profiles, built in our Istanbul plant. Technical specifications: | Specification | Range | | --- | --- | | Sheet thickness | 1.0 – 3.0 mm | | Sheet width | 150 – 400 mm | | Line speed | 10 – 60 m/min | | Roll forming stations | 12 – 22 | | Total motor power | 15 – 25 kW | Note: Ranges cover the series; each line is sized to your project according to profile section, material and capacity. Q: Can I produce both C and U profiles on the same line? A: Yes; with a cassette change, C, U and sigma sections run on the same frame. If you switch often, we recommend a quick-change cassette configuration. Q: Are holes and slots punched inline? A: A hydraulic press unit is integrated into the line; mounting holes and adjustment slots are punched before the profile is cut — no second operation needed. Q: Does hot-dip galvanized sheet suffer in forming? A: With roller surface and pressure matched to the coating, it stays intact. Our rollers are made from 4140 steel and hardened to 58-60 Rockwell. Q: Why is the coating chosen before the profile is designed? A: Because it decides both the corrosion life and how the section can be formed. Hot-dip galvanized coil and zinc-aluminium-magnesium coatings such as Magnelis behave differently at a tight radius, and the coating also determines what happens at the cut ends and the punched holes, where bare steel is exposed. Zinc-aluminium-magnesium coatings are chosen partly because they give some self-healing at cut edges, which matters on a profile that is punched and sheared thousands of times. Tell us the coating with the drawing — the roller radii are set for it. Q: Can holes be punched after forming instead? A: It is possible but it is the wrong way round for this product. Punching a formed section means punching through a curved or stiffened area, which distorts the profile locally and leaves a hole that is harder to control dimensionally. Punching flat keeps the pattern accurate and lets the whole thing be done in one pass through the line. The reason solar profiles are punched in line at all is to remove site drilling — doing it afterwards puts that cost straight back. Q: What does a change in the mounting layout cost on the line? A: If it is a change in hole positions or lengths, it is a recipe change and no tooling is involved — that is what the punching stations and the length recipes are for, and it is why solar work suits this kind of line. If the profile section itself changes, that is a roller set question and a different conversation. Worth separating the two when you are planning: layout changes are routine, section changes are not. Q: Does hot-dip galvanized sheet lose anything during forming? A: Not if the radii and pressures are right for it. Zinc coating is more brittle than the steel underneath, so damage shows up as fine cracking on the outside of the tightest bends rather than as visible peeling. That is a tooling design question, decided when the roller set is made rather than adjusted afterwards. It is also why sending the coating specification with the profile drawing is not a formality. Q: Which sections are normally used for solar mounting structures? A: Hat, C and Omega sections cover most of it, in various depths depending on span and wind zone. The structural design is the plant designer's responsibility and it varies a great deal by country — snow and wind loading move the section size more than anything else. We tool to the section on your drawing; if the project is at an earlier stage than that, it is usually more productive to fix the structural design first and specify the line around it than the other way round. ### Storage Rack Production Line Source: https://servosteel.com.tr/en/roll-forming-lines/storage-rack Storage rack production line: a custom roll forming solution with punching stations for rack uprights and beam profiles. Technical specifications: | Specification | Range | | --- | --- | | Sheet thickness | 1.5 – 5.0 mm | | Sheet width | 100 – 400 mm | | Line speed | 5 – 20 m/min | | Roll forming stations | 18 – 30 | | Total motor power | 15 – 37 kW | Note: Ranges cover the series; each line is sized to your project according to profile section, material and capacity. Q: Can uprights and beams run on the same line? A: Their sections differ, so two roller sets are normally needed. Depending on your order mix, a single frame carrying two sets can also be built. Q: How is the hole pattern defined? A: It is tooled to the hook pitch of your rack system; pitch and hole shape are project specific. A sample or technical drawing is enough to match your existing system. Q: What sheet thickness does the line handle? A: Heavy duty rack profiles typically call for thick material; the section and thickness range are sized per project. We define capacity together from your drawing. Q: Which standards apply to racking, and what do they ask of the production line? A: Static pallet racking is designed to EN 15512, with EN 15620 covering manufacturing and installation tolerances and EN 15635 the operation and inspection of the installed system. Racking is a load-bearing structure, so what the line has to guarantee is dimensional: section geometry and hole position within the tolerance the design was calculated at. The design calculation and the CE responsibility belong to the rack system owner — the line has to be able to produce to it repeatably, day after day. Q: Why does hole pitch accuracy matter more than hole size? A: Because pitch error accumulates and hole size does not. A hole slightly oversize is a local fit issue; a feed that is consistently a fraction of a millimetre long puts every hole progressively further out along the upright, and by the top of a tall column the connector will not go in. This is why the punching station is fed by servo with encoder measurement rather than by a mechanical stop, and why the specification you should compare between suppliers is pitch tolerance over the full profile length, not per step. Q: Which material is used for rack profiles? A: Uprights and beams are usually rolled from structural steel in the S350GD to S390GD range, supplied pre-galvanized. The grade is not interchangeable: higher yield strength springs back more, so the same finished section needs different roller geometry and more compensation. It also changes how the perforated web behaves during forming. Send the grade with the drawing — the tooling is designed around it. Q: Can you match the hole pattern of an existing rack system? A: Yes. The punching tooling is made to the pattern, and a sample profile or a dimensioned drawing is enough to reproduce it. One thing worth raising early: connector patterns are often the intellectual property of the rack system owner and some are protected. Deciding what you are entitled to produce is the buyer's call, not the machine builder's — we tool to the pattern you specify. Q: Are beams produced the same way as uprights? A: No, and it is worth separating the two when you plan the investment. Uprights are open perforated sections and the whole line is built around punching accuracy. Beams are usually closed box sections, often formed from two profiles and joined, so the line carries a different station sequence and a joining stage instead of a large punching group. Most racking manufacturers end up with two lines rather than one that compromises on both. ### Scaffolding Plank Production Line Source: https://servosteel.com.tr/en/roll-forming-lines/scaffolding-plank Scaffolding plank production line: a complete roll forming line for anti-slip steel platform and plank profiles. Technical specifications: | Specification | Range | | --- | --- | | Sheet thickness | 1.2 – 2.0 mm | | Sheet width | 240 – 520 mm | | Line speed | 4 – 20 m/min | | Roll forming stations | 15 – 26 | | Total motor power | 11 – 22 kW | Note: Ranges cover the series; each line is sized to your project according to profile section, material and capacity. Q: Is the anti-slip perforation made inline? A: Yes, the embossing and punching unit is integrated; the anti-slip pattern is formed on the plank surface while the profile is being rolled. Q: How is plank length set? A: Length is entered as a recipe on the control panel; the cut length is servo controlled and can be changed within a batch. Q: Are the end caps part of the line? A: The end-cap pressing unit is optional. On request it is added at the end of the line; otherwise it is done at a separate station. ### Guardrail Production Line Source: https://servosteel.com.tr/en/roll-forming-lines/guard-rail Guardrail production line: a heavy-duty roll forming solution for W-beam and three-wave highway barrier profiles. Technical specifications: | Specification | Range | | --- | --- | | Sheet thickness | 2.5 – 4.0 mm | | Sheet width | 480 – 750 mm | | Line speed | 3 – 18 m/min | | Roll forming stations | 16 – 22 | | Total motor power | 30 – 45 kW | Note: Ranges cover the series; each line is sized to your project according to profile section, material and capacity. Q: Can I produce W-beam and thrie-beam on the same line? A: The two sections need different roller sets. Both can run on the same frame by changing the set; for frequent switching we recommend a quick-change arrangement. Q: Is galvanized sheet processed, or is the profile galvanized afterwards? A: Both are possible. For pre-galvanized sheet the roller surface and pressure are set accordingly; for post-galvanizing the profile is rolled from bare steel. Q: How are holes and mounting slots made? A: A hydraulic press unit is integrated into the line; connection holes and slots are punched before the profile leaves the line. Q: Which standard applies to guardrail, and what does it require from the line? A: EN 1317 is the European standard for road restraint systems. It classifies barriers by containment level, impact severity and working width, and it tests the installed system as a whole — not the beam on its own. What that asks of the production line is repeatability: wave geometry, hole pitch and beam length have to stay within the tolerances of the approved drawing, so the system that was crash-tested is the same one coming off the line. The approval itself belongs to the barrier system owner; the line makes conformity producible, it does not carry the certificate. Q: Which steel grade is used for the beams? A: Guardrail beams are normally rolled from structural steel in the S235 to S355 range, and which one depends on the containment class the system was approved at. The grade is not just a purchasing detail: a higher yield strength springs back more, so the same wave needs different roller geometry and more compensation. Send the grade and thickness with the enquiry — the roll tooling is designed around them, not adjusted to them afterwards. Q: How does hot-dip galvanizing affect the line? A: There are two routes and they load the line differently. If the beam is galvanized after forming, which is the common route for highway work under EN ISO 1461, the line rolls bare steel and the zinc is applied at a galvanizing plant — the coating then covers the cut edges and the punched holes as well. If pre-galvanized coil is used, the coating is already on the strip, so roller surfaces and pressures are set to avoid scratching it, and the cut and punched edges stay uncoated. Which route applies is normally fixed by the project specification rather than by the machine. Q: How long does a changeover between profiles take? A: Moving between W-beam and thrie-beam means changing the roller set; the frame, drive and punching unit stay where they are. How long that takes depends on how the line was built for it — a standard arrangement makes it a planned job between production runs, while a cassette or quick-change design brings it down considerably. If you expect to alternate between the two sections regularly, say so at the enquiry stage: designing the frame for it costs far less than retrofitting it later. Q: Can guardrail posts be produced on the same line? A: No. Sigma and C-section posts are a different cross-section with a different station sequence and a different cutting arrangement, so they run on their own roll forming line. We build both, and when a project needs beams and posts together the two lines are quoted as a set — which is usually the more sensible way to buy them, because the post length and hole pattern have to match the beam they carry. ### Noise Barrier Production Line Source: https://servosteel.com.tr/en/roll-forming-lines/noise-barrier Noise barrier production line: a roll forming solution producing perforated and solid sound barrier cassette and panel profiles. Technical specifications: | Specification | Range | | --- | --- | | Sheet thickness | 0.3 – 1.5 mm | | Sheet width | 300 – 800 mm | | Line speed | 12 – 25 m/min | | Roll forming stations | 16 – 20 | | Total motor power | 7.5 – 30 kW | Note: Ranges cover the series; each line is sized to your project according to profile section, material and capacity. Q: Are the perforated front panel and cassette back panel made on one line? A: They are two different sections, so two roller sets are normally used. For the perforated panel the punching unit is integrated into the line. Q: Does the hole pattern affect acoustic performance? A: Yes; hole diameter and open area ratio directly determine sound absorption. We tool and produce the pattern defined in your acoustic design. Q: Can you produce aluminium panels? A: Yes. Aluminium requires lower pressure and a different roller surface; the line is set up for the material. Q: Which standards govern noise barriers, and what part of them concerns the line? A: Road traffic noise reducing devices are placed on the market under EN 14388, with EN 1793 covering acoustic performance — sound absorption and airborne sound insulation — and EN 1794 the non-acoustic side such as wind load, stone impact and safety in the event of collision. Almost all of that is tested on the finished device, not on the sheet: the cassette with its perforated face, absorbing core and back panel behaves as a system. What the line is responsible for is producing the metalwork to the design consistently, so that the barrier installed is the one that was tested. Q: Does the perforation pattern really change acoustic performance? A: Yes, and it is one of the few things on the panel where a small production drift has an audible result. Absorption depends on hole diameter and open area ratio together with what sits behind the sheet. If open area varies between production runs, the barrier absorbs differently along its length while looking identical. This is why the pattern comes from the acoustic design as a fixed specification and the line reproduces it rather than approximating it. Q: Why can't the sheet be perforated all the way to the edge? A: Because the edges are where the panel is bent and where it carries load. A perforation running into a bend line tears at the holes as the section is formed, and the flange that should hold the panel in its post ends up weakened exactly where it matters. The perforated field is therefore laid out relative to the finished profile, with solid material left at every bend and at the ends. It is a common point of confusion when a panel is being copied from a sample — the visible perforated area is smaller than the sheet. Q: What changes on the line between aluminium and steel? A: Aluminium is softer, marks more easily and tends to pick up on roller surfaces, so it runs at lower pressure with different roller surfaces and more attention to lubrication. Steel takes higher pressure and springs back more, which means different roller geometry for the same finished section. Both can run on one line, but they are set up as separate recipes; if you expect to alternate between them regularly, say so at the enquiry stage so the roller sets are planned for it. Q: Does the line also assemble the cassette and fill the absorbing core? A: No. The roll forming line produces the perforated front profile and the closed back profile. Inserting the mineral wool or other absorbing core, closing the cassette and fitting the end caps is a separate assembly operation with its own equipment. It is worth planning the two together, because the cassette design determines the profile geometry — but they are not the same machine and should be budgeted separately. ### C+ / Sigma / Omega Profile Line Source: https://servosteel.com.tr/en/roll-forming-lines/c-sigma-omega-profiles C, Sigma and Omega profile production line: an adjustable, multi-section roll forming solution for light steel framing profiles. Technical specifications: | Specification | Range | | --- | --- | | Sheet thickness | 1.5 – 4.0 mm | | Sheet width | 100 – 400 mm | | Line speed | 10 – 36 m/min | | Roll forming stations | 16 – 24 | | Total motor power | 11 – 30 kW | Note: Ranges cover the series; each line is sized to your project according to profile section, material and capacity. Q: Is it possible to run all three sections on one line? A: Yes, with a cassette-change configuration C, sigma and omega run on the same frame. The more sections you run, the faster a quick-change arrangement pays for itself. Q: What is needed when the profile height changes? A: With an adjustable cassette structure the height is selected on the panel; if the section family changes, the roller set is swapped. Q: How long do the rollers last? A: Rollers are made from 4140 steel and hardened to 58-60 Rockwell; with correct pressure settings they can produce millions of metres of profile. Q: Where is the real limit of an adjustable line? A: The adjustment covers a range of widths and heights within one section family and the geometry it was designed around. What it does not do is turn one profile family into another: moving between C, Sigma and Omega is a roller set matter, and moving outside the designed range means new tooling regardless of how much adjustment the machine has. The honest way to specify a line like this is to give the full list of sections you expect to produce, including the ones you do not have orders for yet, and let the range be designed around that list. Q: Why does twist matter more than bow on structural sections? A: Because a bow can often be pulled out during erection and a twist cannot. C and Sigma sections are asymmetric about at least one axis, so residual stress left in the strip does not release as a simple curve — it releases as a rotation along the length. A twisted purlin will not sit flat where it bolts, and the fix on site is usually to reject the piece. This is why the straightening stage carries more weight on a structural line than most buyers expect, and why it is worth asking about specifically. Q: Can hole patterns be changed without new tooling? A: Hole position and spacing are recipe values, so a new layout is a data change rather than a tooling change. Hole shape and size are tooling — a different diameter or a slot instead of a round hole means a punch and die. When you plan the line, it is worth listing every hole shape you use across your product range at the start, because adding shapes later is a purchase each time while adding positions is free. Q: How long do the roll tools last? A: Longer than most people expect, and it depends much more on what runs through them than on hours. Uncoated steel, abrasive coatings, thick material and tight radii all wear tooling faster than light galvanized sheet at generous radii. Rolls are a maintenance item rather than a consumable — they are re-machined rather than replaced when they eventually go out of tolerance. What actually kills a roll set early is running it misaligned or under too much pressure, which is a setup discipline question more than a metallurgy one. Q: Is one adjustable line better than two dedicated lines? A: It depends on the mix, and it is worth doing the arithmetic rather than assuming. An adjustable line wins when the order book is varied and no single section dominates — you buy one machine, one control system and one set of spares, and changeovers are frequent but short. Two dedicated lines win when two sections make up most of the volume, because each runs at its own optimum with no changeover at all. If one section is more than roughly half your output, dedicating a line to it usually pays. ### Trapezoidal Sheet and Facade Panel Line Source: https://servosteel.com.tr/en/roll-forming-lines/trapezoidal-and-facade-panel Production lines for trapezoidal sheet, standing-seam roofing and facade cladding profiles: forming, cut-to-length, automatic stacking and packing. Technical specifications: | Specification | Range | | --- | --- | | Sheet thickness | 0.3 – 1.5 mm | | Sheet width | ≤ 1,300 mm | | Line speed | 15 – 60 m/min | | Roll forming stations | 16 – 20 | | Total motor power | 11 – 22 kW | Note: Ranges cover the series; each line is sized to your project according to profile section, material and capacity. Q: Does forming damage the coating on painted sheet? A: Not with the right roll design and surface hardness. The station count is what decides it: build the section in stages rather than in one step and the material is not forced. Since the coating will sit outdoors on the finished product, this is directly a question of service life — we ask for the sheet's coating type at quotation stage. Q: How long does changing the profile section take? A: Changing the section means changing the roll tooling, which is a different job from changing the length. Cut length is servo controlled and called from the recipe, so it changes while the line runs. How long a section change takes depends on whether the tooling is built on the line or off it in a cassette. ## Coil slitting lines Source: https://servosteel.com.tr/en/coil-slitting-lines Complete lines that slit wide coils into strips to your exact widths: every unit from decoiler to recoiler is built at the Servosteel facility, factory-tested and commissioned turnkey on site. | Series | Coil capacity | Sheet thickness | | --- | --- | --- | | Light-duty | 1,500 / 2,500 / 3,000 / 4,000 kg | 0.5 – 1 mm · 0.5 – 2 mm | | Heavy-duty | 6,000 / 8,000 / 10,000 / 15,000 kg | 0.8 – 3 mm · 1.0 – 5 mm | Note: The values above are standard series; coil width, number of strips and line speed are sized to your project. Q: What does a coil slitting line do? A: It cuts a wide steel coil lengthwise into narrower strips of the width you need, then re-coils those strips. One master coil therefore yields several strips sized to your orders, which lowers both scrap and stock cost. Q: Which capacity should I choose? A: The deciding factor is the maximum coil weight you will process. Light series are built for 1,500–4,000 kg and 0.5–2 mm sheet thickness; heavy series for 6,000–15,000 kg and 0.8–5 mm. Size for your volume 2–3 years out rather than today — the frame cannot be enlarged later. Q: Should I buy a slitting line or a cut-to-length line? A: The difference is the shape of the output. A slitting line cuts the coil lengthwise and the output is still a coil — in narrow strips. A cut-to-length line cuts across the coil and the output is a flat sheet. Choose slitting if you sell strip, cut-to-length if you sell sheet to fixed dimensions. The two can also be combined in one line. Q: What determines the price of a coil slitting line? A: Four things drive it most: coil weight capacity, the sheet thickness range, how many strips are cut at once, and the level of automation (loading car, automatic setsquare, recoiler tension control). That is why we quote per project rather than from a catalogue — send your coil weight, thickness and target strip dimensions and we will size it. Q: How does commissioning work? A: The line is fully assembled and tested at our own facility before shipment, so on site only installation and commissioning remain. That keeps installation time short. Operator training is given during commissioning. Q: What is the difference between cutting and slitting? A: Slitting cuts along the length of the coil and produces narrower coils. Cutting, in the cut-to-length sense, cuts across it and produces flat sheets. Slitting leaves you with coil to feed another process; cut-to-length leaves you with finished sheet. Q: What are the different types of slitting line? A: The cutting principle does not change from one line to the next — circular knives on an arbor, set to the strip widths you need. What separates lines is capacity: coil weight, strip thickness, and how many strips one pass yields. The frame, the drive and the way strips are held under tension on the recoiler scale with those. Choosing between them comes back to your heaviest coil and thickest material — see the capacity question above. Q: What is a coil processing line? A: "Coil processing line" is the umbrella term for the lines that turn a steel coil into a usable form. There are four families: slitting lines cut the coil into narrower strips, cut-to-length lines cut it into flat sheets, roll forming lines shape it into a finished profile, and press feeding systems feed it into a press. Servosteel manufactures all four in one plant in Istanbul, which is why a slitting line and the press feeder behind it can be ordered as one project with one control philosophy. ## Cut-to-length lines Source: https://servosteel.com.tr/en/cut-to-length-lines Complete lines that turn coils into sheets at exactly the length you need: straightening, servo feeding, guillotine and stacking — all built in our facility and managed by a single PLC. Q: What does a cut-to-length line do? A: It uncoils, straightens and cuts the strip into flat sheets at the length you set. The output is not a coil but sheet to fixed dimensions. The line consists of a decoiler, straightener, servo feeder, guillotine shear and stacking unit. Q: Should I buy a cut-to-length line or a slitting line? A: The difference is the shape of the output. A cut-to-length line cuts across the coil and produces flat sheet. A slitting line cuts lengthwise; the output is still a coil, in narrow strips. Choose cut-to-length if you sell sheet to fixed sizes, slitting if you sell strip. The two can be combined in one line. Q: How is sheet flatness achieved? A: Coil-set memory is removed in the straightening unit, with roll pressures adjusted to the sheet thickness. The guillotine blade clearance is also set to thickness, so the cut is free of burrs and distortion. For sensitive surfaces, an optional PVC film unit protects the sheet from scratching before stacking. Q: What determines the price? A: Coil weight capacity, sheet thickness and width, cutting accuracy and the level of automation (loading car, automatic stacking, PVC film) are the drivers. That is why we quote per project rather than from a catalogue. Q: What is CTL in steel? A: CTL is shorthand for cut-to-length. A CTL line takes coil, straightens it and cuts it across into flat sheets at a set length. It is the opposite of a slitting line, which cuts along the coil and re-coils the narrower strips. Q: What is the difference between blanking and cut-to-length? A: A cut-to-length line produces rectangular sheet at a set length — every piece the same simple shape. Blanking cuts a profiled outline, a contour defined by a die rather than just a length. If the part is rectangular, a cut-to-length line does it faster and with far less tooling; if it has a contour, it belongs on a press. Q: Who buys a cut-to-length line? A: Steel service centres that sell sheet to fixed dimensions, sheet metal processors who buy coil because it is cheaper per tonne than sheet, and manufacturers whose own presses or laser cutters run on blanks. The decision is usually the same one: the coil price is lower, but the sheet has to be cut in-house to use it. We build the line around your coil weight, thickness and sheet size, and commission it on site. ## Machines ### Decoilers Source: https://servosteel.com.tr/en/machines/decoilers Hydraulic (6-20 t) and mechanical (500-4,000 kg) decoilers and uncoilers: custom solutions for press feeding and coil processing lines. Technical specifications: | Specification | Mechanical | Hydraulic | | --- | --- | --- | | Models | 500 · 750 · 1,500 · 2,500 · 3,000 · 4,000 kg | 6 · 8 · 10 · 12 · 15 · 20 t | | Coil width | 30 – 1,200 mm | 80 – 1,600 mm | | Coil inner diameter | 300 – 550 mm | 450 – 560 mm | | Coil outer diameter (max.) | 1,600 mm | 1,600 mm | | Mandrel expansion | Mechanical | Hydraulic | | Control | Speed control + brake system | Schneider PLC | Q: What is the difference between hydraulic and mechanical decoilers? A: The mechanical series carries 500–2500 kg coils on a handwheel-tightened mandrel, with a conical mandrel on the 3000 and 4000 kg models; the hydraulic series reaches 6–20 tons with hydraulic mandrel expansion and braking. For heavy coils and high line speeds, hydraulic is the safe choice. Q: What capacity should I choose? A: Leave one step of margin above your heaviest coil: 6 tons for a 5-ton coil, 10 tons for an 8-ton coil. We verify the choice against coil width and inner diameter (450–560 mm) together. Q: What does bidirectional operation provide? A: Since the shaft rotates both ways, the strip can be fed from the top or the bottom — you handle coils wound in either direction without changing your line layout. Q: When is a loading car necessary? A: Mounting heavy coils onto the shaft with a forklift is risky and slow; a hydraulic loading car aligns the coil and seats it on the mandrel in seconds. We recommend it as standard above 6 tons. Q: What is an uncoiler, and is it the same as a decoiler? A: They are the same machine. Uncoiler, decoiler and coil reel are used interchangeably — uncoiler is the more common term in North America, decoiler in Europe. Both describe the unit that holds the coil at the head of the line and pays the strip off under controlled tension. Everything on this page applies whichever word you searched for. Q: What is the working principle of a decoiler machine? A: The coil is seated on a mandrel that expands against its inner diameter, so it is gripped from the inside rather than clamped from the outside. As the line draws strip, the mandrel turns and a brake holds back-tension so the coil cannot overrun and loosen. On the hydraulic series both the expansion and the braking are powered; on the mechanical series the mandrel is tightened by handwheel and the shaft runs under speed control with a brake system. Q: Do you supply manual decoilers? A: The mechanical series is what is usually meant by a manual decoiler: the mandrel is tightened by handwheel rather than hydraulically, and coil tension is held by a brake with speed control. It covers coils from 500 to 2,500 kg. Above that the hydraulic series takes over, where mandrel expansion and braking are both powered and a loading car handles seating the coil. Q: Can decoiling, straightening and feeding be combined in one machine? A: Yes — that is what a compact line is: decoiler, straightener and servo feeder on a single platform, managed from one HMI, for shops without the floor space for a classic layout. Where coils are heavy or the line layout is already fixed, a separate decoiler feeding a straightener servo feeder is the better arrangement. Q: What determines decoiler prices? A: There is no list price; a decoiler is sized to the coil it will carry. Four things set the price: coil weight (a 500 kg mechanical decoiler and a 20 t hydraulic decoiler are different classes of machine), coil width and inner diameter, whether the mandrel expands mechanically or hydraulically, and the automation level: loading car, brake, bidirectional operation. Send us your coil weight, width and the press or line speed, and we will quote to that capacity. #### Hydraulic Decoilers Source: https://servosteel.com.tr/en/machines/decoilers/hydraulic Our hydraulic decoilers carry coils from 6,000 kg to 20,000 kg and run strip widths up to 1,600 mm. Mandrel expansion is hydraulic; a pneumatic hold-down arm and laser sensor loop control come as standard. Capacity and width: | Coil weight | Material width | | --- | --- | | 6,000 kg | 80 – 600 / 80 – 800 / 80 – 1,000 mm | | 8,000 kg | 80 – 800 / 80 – 1,000 / 80 – 1,200 mm | | 10,000 kg | 80 – 1,000 / 80 – 1,200 / 80 – 1,300 mm | | 12,000 kg | 80 – 800 / 80 – 1,300 mm | | 15,000 kg | 80 – 1,500 mm | | 20,000 kg | 80 – 1,600 mm | #### Mechanical Decoilers Source: https://servosteel.com.tr/en/machines/decoilers/mechanical Our mechanical decoilers carry coils from 500 kg to 4,000 kg. The hub is clamped by mandrel; speed control and a brake lining system are standard, and the unit can unwind in both directions. Capacity, width and inner diameter: | Coil weight | Material width | Coil inner diameter | | --- | --- | --- | | 500 kg | 30 – 300 mm | 300 – 550 mm | | 750 kg | 30 – 300 mm | 350 – 550 mm | | 1,500 kg | 30 – 400 mm | 400 – 550 mm | | 2,500 kg | 30 – 500 mm | 450 – 550 mm | | 3,000 kg | 80 – 800 mm | 450 – 560 mm | | 4,000 kg | 100 – 1,200 mm | 450 – 560 mm | ### Servo Feeders Source: https://servosteel.com.tr/en/machines/servo-feeders Servo feeders for press lines: standard and mini series servo roll feeders for 0.2-4 mm sheet up to 1,600 mm wide, with Schneider Lexium servo control. Technical specifications: | Specification | Value | | --- | --- | | Material thickness | 0.2 – 4.0 mm | | Strip width | ≤ 1,600 mm | | Free feed speed | 35 / 100 / 250 m/min | | Feed rolls | 2 × Ø80 – Ø85 mm | | Display | 7" touchscreen HMI | | Mold memory | 250 recipes | Q: What determines the feeding pitch accuracy? A: The servo motor–gearbox pair, the pressure of the Ø85 mm feed rollers and synchronization with the press cam. Settings are stored as recipes; with 250-die memory, no readjustment is needed after a die change. Q: What material range does it handle? A: 0.4–4.0 mm thickness and strip widths up to 1600 mm, with a free feeding speed of 35 m/min. For material outside this range we size the line together with you. Q: When is the mini series sufficient? A: For narrow strip and small presses, the mini series saves floor space and cost; pitch accuracy is identical to the standard series. Strip width and coil weight define the limits. Q: How is press synchronization set up? A: The press cam signal is wired to the feeder; feeding is timed to the press dead center and a pilot-pin release is applied. Our team performs commissioning on site. Q: What is a servo feeder? A: A servo feeder is the machine that advances strip into the die between press strokes. A servo motor drives the feed rolls, so the length of each advance is a number in the control rather than something fixed by mechanical linkage — that is what makes it repeatable to the millimetre and changeable between jobs without retooling. The drive here is Schneider Lexium, running 2 × Ø85 mm feed rolls from a 7-inch touchscreen. Q: What are the three types of press feeder? A: Air, mechanical and servo. Air feeders are the simplest and suit short, light work. Mechanical feeders take their motion from the press itself, so feed length is set by the linkage and changing it means changing hardware. Servo feeders drive the rolls independently, which is why the pitch is set in the control instead of on the machine. The trade-off between the last two is worked through on the servo versus mechanical feeding comparison. #### Mini Servo Feeders Source: https://servosteel.com.tr/en/machines/servo-feeders/mini Our mini servo feeders handle strip widths from 10 mm to 600 mm and reach a free feed speed of 100 m/min — 250 m/min as an option. Trigger and reductor driven feeding and pneumatic piloting come as standard. Models and width: | Model | Material width | | --- | --- | | SRV-SS102 | 10 – 100 mm | | SRV-SS202 | 20 – 200 mm | | SRV-SS302 | 30 – 300 mm | | SRV-SS402 | 40 – 400 mm | | SRV-SS502 | 50 – 500 mm | | SRV-SS602 | 60 – 600 mm | #### Cased Servo Feeders Source: https://servosteel.com.tr/en/machines/servo-feeders/cased Our cased servo feeders handle strip widths from 40 mm to 1,600 mm. A reductor driven feed system and pneumatic piloting are standard; mould protection and lubrication can be added as options. Models and width: | Model | Material width | | --- | --- | | SRV-KS303 | 40 – 300 mm | | SRV-KS403 | 50 – 400 mm | | SRV-KS503 | 60 – 500 mm | | SRV-KS603 | 60 – 600 mm | | SRV-KS803 | 70 – 800 mm | | SRV-KS1003 | 110 – 1,000 mm | | SRV-KS1203 | 250 – 1,200 mm | | SRV-KS1303 | 250 – 1,300 mm | | SRV-KS1603 | 400 – 1,600 mm | ### Straightener Servo Feeders Source: https://servosteel.com.tr/en/machines/straightener-servo-feeders Straightener servo feeders: straightening + precise feeding in one machine. A compact solution for press lines with cabinet and mini options. Technical specifications: | Specification | Value | | --- | --- | | Strip width | ≤ 1,600 mm | | Material thickness | 0.4 – 6.0 mm | | Straightening rolls | 7 / 9 / 11 / 13 | | Mold memory | 250 recipes | | Control | Schneider colour LCD touchscreen | Q: When do I need a straightener servo feeder? A: If coil set and curvature in the strip are degrading part quality, combining feeding and straightening in one frame saves both floor space and investment. Q: How many straightening rollers should I choose? A: Thin and surface-critical sheets need more rollers, thick sheets fewer. We help you pick the right variant among 7 / 9 / 11 / 13 rollers for your material. Q: How does it differ from a separate straightener and feeder? A: One frame, one control, one operator panel: the synchronization problem between two machines disappears, the line gets shorter, wiring and commissioning become simpler. Q: How is the straightening pressure adjusted? A: Pressure is set according to sheet thickness and stored in the recipe; the SCHNEIDER touchscreen keeps up to 250 die memories. It works up to 0.5–4 mm thickness and 1600 mm width. Q: Is this the same as a decoiler straightener feeder? A: Close, but not the same machine. A decoiler straightener feeder combines all three functions in one unit; this one combines the last two — straightening and feeding — in a single body and takes its strip from a separate decoiler. Where all three need to sit on one platform, that is a compact line. #### Mini Straightener Servo Feeders Source: https://servosteel.com.tr/en/machines/straightener-servo-feeders/mini Our mini straightener servo feeders handle strip widths from 15 mm to 400 mm and combine straightening with feeding in one unit. A gear driven top and bottom roll group and pneumatic piloting are standard. Models and width: | Model | Material width | | --- | --- | | SRV-MDS102 | 15 – 100 mm | | SRV-MDS202 | 30 – 200 mm | | SRV-MDS302 | 50 – 300 mm | | SRV-MDS402 | 80 – 400 mm | #### Cased Straightener Servo Feeders Source: https://servosteel.com.tr/en/machines/straightener-servo-feeders/cased Our cased straightener servo feeders handle strip widths from 30 mm to 1,600 mm. Straightener mandrels can be adjusted one by one; inlet-outlet guides and a drive mandrel piloting system are standard. Models and width: | Model | Material width | | --- | --- | | SRV-DSS304 | 30 – 300 mm | | SRV-DSS404 | 40 – 400 mm | | SRV-DSS504 | 50 – 500 mm | | SRV-DSS604 | 60 – 600 mm | | SRV-DSS804 | 70 – 800 mm | | SRV-DSS1004 | 100 – 1,000 mm | | SRV-DSS1204 | 200 – 1,200 mm | | SRV-DSS1304 | 300 – 1,300 mm | | SRV-DSS1604 | 400 – 1,600 mm | ### Compact Lines Source: https://servosteel.com.tr/en/machines/compact-lines Compact press feeding lines: decoiler, straightener and servo feeder on one platform. A complete solution for tight spaces. Technical specifications: | Specification | Value | | --- | --- | | Material width | 40 – 1,300 mm | | Material thickness | 0.5 – 6 mm | | Free speed | 25 / 35 / 40 m/min | | Feed accuracy | ±0.1 mm | | Coil weight | 2,500 – 10,000 kg | | Coil inner / outer dia. | 450 – 560 / 1,300 – 1,600 mm | | Feed rolls | 2 + 2 | | Straightening rolls | 5 × Ø85 / 7 × Ø110 mm | Q: Compact line or separate machines? A: If space is tight and coils are up to 10 tons, combining decoiler, straightener and feeder on one platform solves installation, synchronization and floor-space issues at once. For larger capacities, separate machines offer flexibility. Q: Which configurations are available? A: We offer three setups: decoiler–straightener, straightener–feeder and decoiler–straightener–feeder. The choice depends on your press line and existing equipment. Q: What are the speed and accuracy figures? A: Free speed is 40 m/min and feeder accuracy is −0.1 mm; the 2+2 feed and 5 straightening rollers are Ø85 mm in diameter. Q: What coil and sheet sizes does it handle? A: Strip width 40–1300 mm, thickness 0.5–4 mm, coil weight 2500–10000 kg; inner diameter 450–560 mm, outer diameter up to 1600 mm. ### Automatic Stacker Source: https://servosteel.com.tr/en/machines/automatic-stacker Automatic stacking unit for roll forming and cut-to-length lines: collection at line speed, counted packs, unattended operation. Q: Can it be added to a line I already have? A: In most cases yes, but two things decide it: the line's discharge height, and whether the cutting unit can give a signal. The stacker needs a trigger from the cut to know when to move; if the control system cannot expose that signal, an intermediate solution is built. The layout also has to leave clear floor space on the pick-up side for a forklift or pallet truck. Q: Will the same stacker handle different profile sections? A: As long as the section family is similar, yes — the setting changes with the recipe. But profiles with very different width-to-height ratios (a narrow rail versus a wide trapezoidal sheet, say) do not work well on the same holding arrangement. Telling us up front which profile families will run on the line lets us pick the right arrangement. Q: Does the line have to stop when a pack is complete? A: No. When the stacker finishes a pack the table lowers and returns to its empty position while the line keeps running. The time needed to remove the pack is planned against line speed, so there is no pause between packs. Q: Can the same stacker handle both sheets and profiles? A: The collecting principle is the same, but the grippers and stops are laid out around the section being stacked. If you want one unit to take flat sheet off a cut-to-length line and profile off a roll forming line, say so at the outset — the table and stops are designed for it. ## Comparisons ### Servo feeder or mechanical feeder? Source: https://servosteel.com.tr/en/comparison/servo-vs-mechanical-feeding | Criterion | Servo feeder | Mechanical / pneumatic feeder | | --- | --- | --- | | Pitch accuracy | Closed loop with servo motor and encoder; tolerance holds in series production | Limited by mechanical cam or pneumatic stroke; pitch drifts with wear | | Changing the pitch | Value entered on the panel, takes seconds | Requires mechanical adjustment or a cam change | | Die change | Recipe memory for up to 250 dies; no re-setup | Re-adjustment on every die | | Press synchronization | Fully synchronized via cam signal, pilot release standard | Limited; synchronization gets harder at high stroke rates | | Investment and running cost | Higher up front, lower scrap and downtime | Lower up front, higher setup time and scrap | In short: As die variety grows, the setup and scrap savings of a servo feeder close the initial price gap. If you produce one part in long runs, a mechanical feeder is still a reasonable choice. ### Slitting line or cut-to-length line? Source: https://servosteel.com.tr/en/comparison/slitting-vs-cut-to-length | Criterion | Coil slitting line | Cut-to-length line | | --- | --- | --- | | Cutting direction | Longitudinal — along the strip | Transverse — across the width | | Output product | Narrow strip coils | Flat sheets cut to size | | Cutting unit | Circular knife sets | Shear or flying cut | | End of line | Recoiler and tension system | Stacking unit | | Typical customer | Roll forming, profile and tube producers | Press shops, laser cutting and sheet fabricators | In short: These are not alternatives to each other — they make different products. If you need both strip and sheet, let us discuss combined lines that do slitting and cut-to-length on one frame. ### Hydraulic or mechanical decoiler? Source: https://servosteel.com.tr/en/comparison/hydraulic-vs-mechanical-decoiler | Criterion | Hydraulic decoiler | Mechanical decoiler | | --- | --- | --- | | Capacity range | 6 – 20 tonnes | 500 – 4,000 kg | | Mandrel expansion | Hydraulic — controlled from the panel | Mechanical — hand-tightened with a handwheel | | Braking | Hydraulic brake, controlled to line speed | Brake pad system | | Coil loading | Aligned with a hydraulic loading car | Mounted on the shaft by forklift | | Operator effort | Low — settings from the panel | High — manual clamping on every coil | In short: With heavy coils and frequent changes, hydraulic pays for itself quickly through operator time and safety. For narrow strip and light coils, the mechanical series is still the most economical solution. ## Applications by sector ### Energy Source: https://servosteel.com.tr/en/applications/energy Lines and feeding systems for solar mounting profiles, cable management, enclosures and DIN rail production. Q: What separates a solar mounting profile line from a standard profile line? A: The hole pattern. Solar structures carry groups of holes at varying intervals along the profile, and those have to stay synchronised with forming. The line is built so the punching unit and the servo feed position together from the recipe; punching afterwards is both slower and costs you the tolerance. Q: Does forming damage the coating on galvanised sheet? A: With the right roll design and surface hardness, forming does not strip the coating. The number of roll stations is what matters: if the section is built up gradually rather than in one step, the material is not forced. For profiles that will sit outdoors, this is directly a question of service life. ### Construction Source: https://servosteel.com.tr/en/applications/construction Scaffolding planks, structural profiles, guardrails and noise barriers, suspended ceilings, facade and lift components. Q: How thick can you go on structural profiles? A: Thickness alone does not decide it — thickness multiplied by the material's yield strength does. High-strength steel at the same thickness demands a markedly heavier line than mild steel. That is why we ask for the material grade alongside the thickness range at quotation stage. Q: Does the line have to stop when profile length changes? A: No. Cut length is servo controlled and called from the recipe, so it can be changed while the line runs. Changing the section is a different matter — that means changing the roll tooling. ### Logistics and storage Source: https://servosteel.com.tr/en/applications/logistics-and-storage Roll forming lines for heavy-duty racking, retail shelving and warehouse carrier profiles. Q: The hole pattern varies along the profile — can the line handle that? A: Yes. The punching unit runs synchronised with the servo feed and the pattern is called from the recipe. The critical question is whether holes are punched before or after forming: punch first and the hole can deform as the section is built; punch after and you need a separate positioning accuracy. Which order is right depends on the profile section. Q: Why does flatness matter so much on a racking profile? A: A bent upright will not align with the other members during assembly and it distorts the load distribution. That is why on racking lines a levelling unit is not optional but, in practice, mandatory. ### Metal furniture and retail fittings Source: https://servosteel.com.tr/en/applications/metal-furniture-and-retail Precision lines for shelf, table and cabinet profiles, drawer runners and display stand components. Q: How is tolerance held on small sections? A: On a small section the problem is not force but repeatability. Roll count and station spacing are chosen so the section builds up in stages; thin material forced in one step springs back and the dimension drifts across the shift. A levelling unit is not optional here either. Q: Is there a risk of scratching painted or coated sheet? A: With the right roll surface and feeding arrangement, it is close to nil. On parts with a visible face, what matters is that the profile travels carried rather than dragged along the line; automatic stacking at the exit is preferred for the same reason. ### Machinery and industrial equipment Source: https://servosteel.com.tr/en/applications/machinery-and-equipment Project-specific lines for machine frame, guarding panel, conveyor side profiles and enclosure carriers. Q: How many different profiles can one line handle? A: As long as the section family is similar, there is no limit; dimensions and hole pattern change with the recipe. The roll tooling sets the boundary: a different section family means different tooling. Telling us up front which profiles you run lets us build the line around the family rather than one product. Q: Does roll forming make sense for low-volume, high-variety production? A: With many sections and low volumes, tooling changeover time becomes the deciding factor, which pushes quick-change or cassette systems to the front. If volumes really are low, bending or pressing can stay more economical for some profiles — that has to be discussed product by product, there is no single answer. ### Automotive and appliances Source: https://servosteel.com.tr/en/applications/automotive-and-appliances Press feeding systems for high-volume part production — automotive supply, appliances and heating equipment. Q: Why is feed accuracy so decisive in series production? A: The press has to find the sheet in the same position on every stroke. If the position drifts, the part dimension drifts with it and the die is loaded on one side, which raises both scrap and tool wear. In high-volume production a small deviation turns into a large number by the end of the day. Q: Can a complete feeding line fit into a tight footprint? A: Yes — decoiler, straightener and servo feeder can be combined on a single platform. That is exactly what the compact line exists for: it shrinks the floor space that three separately placed machines would occupy. ## Academy guides ### What Does a Roll Forming Line Cost? The 8 Items That Set the Price Source: https://servosteel.com.tr/en/academy/roll-forming-line-cost · Published 2026-09-20 · Updated 2026-09-20 Short answer: Eight items set the price of a roll forming line: the section and the number of forming stations it needs, sheet thickness and material, profile width, whether holes are punched in line, the cut-off type, the roll tooling and how many profiles it has to make, the level of automation at both ends of the line, and the control architecture. Freight, foundation, commissioning and spares rarely appear in a quotation. To budget realistically you need the profile drawing, the thickness range, the material, a target speed and the annual quantity. There is no price list in this article, and there cannot be one for a roll forming line. What sets the price is not the name of the machine but the **profile you intend to make**. The same words, "trapezoidal sheet machine", can describe two lines that are far apart in cost, depending on the depth of the section and the number of bends in it. The eight items below explain where the difference between quotations comes from. At the end there are the costs a quotation usually leaves out, and a way to put competing offers on the same footing. #### 1. The section and the number of stations Roll forming does not bend the sheet in one go; it bends it **step by step**. Each step is a station, and each station means a pair of rolls, a shaft, bearings and a share of the drive. A simple U section is finished in a few stations. A deep channel, a return bend or an interlocking profile needs many more. Across our lines the station count runs from **12 to 30** depending on the profile, and that range is the single biggest step in the price. The practical rule: send the drawing and let engineering give the station count. A number quoted without the drawing is a guess. #### 2. Sheet thickness and material As thickness rises so does forming force, and force sets shaft diameter, bearings, frame thickness and motor power. A 0.3 mm façade sheet and a 5 mm rack upright do not belong on the same line. Material matters as much as thickness: high strength steel needs more force at the same thickness, stainless needs different roll surfaces to protect the finish, and galvanised sheet needs pressure set so the coating survives forming. When you ask for a quotation, give the **thickness range and the material together**. "2 mm" on its own is incomplete. #### 3. Profile width Width increases the span of the shaft. As the span grows the shaft deflects, and the way to stop deflection is a larger diameter, which means more material and more machining through every station. So buying a line wider than you need costs more than buying one faster than you need. Take your widest profile today, add a margin, and stop there. #### 4. Is there punching in the line? Mounting holes, cable openings, drainage slots: they are punched either in the line or afterwards on a press. In the line means a **servo punch station, a die and a measuring system**, with the feed controlled separately so hole position holds along the length. That is the item that raises the price, and its alternative is a second machine and a second operator. Decide it on how much of your work is actually perforated. #### 5. The cut-off Three options, three prices: - **Stop-and-cut:** the line stops, cuts, accelerates. The most economical; it lengthens cycle time. - **Flying shear:** cuts at line speed. Expensive mechanically and in the controls, and it pays for itself at high volume. - **Die cut-off:** a shaped cut matching the section. The die is a separate investment. #### 6. Roll tooling: one line, more than one tool set The line is the frame; the **tooling is the profile**. When you move to a second section, what you buy is tooling, not a line. Three things set the price of a tool set: the number of stations, the roll material and its surface treatment such as hardening or chrome plating, and whether the change system is quick-change or conventional. Say how many profiles you need at the start; every set added later is priced on its own. #### 7. Automation at both ends The two ends of the line quietly move the price: - **Entry:** decoiler capacity, loading car, automatic edge guiding, straightening unit. - **Exit:** automatic stacking, counted bundles, packing and labelling. Manual stacking is the step that limits line speed and adds damage risk; an automatic stacker removes it but raises the investment. If your line really is to run at 40 m/min, exit automation is not a preference but a requirement. #### 8. Control architecture and brand The PLC and drive brand, the level of the operator panel, how many recipes it holds, remote access and fault logging. The real question here is not the brand but the **service**: does that brand have a distributor and spare stock in your country? A brand nobody stocks nearby turns a small fault into a week of downtime. Our lines are controlled with Schneider equipment, chosen for the service network across the markets we export to rather than for the badge. #### Four items a quotation leaves out 1. **Freight and insurance** — a line can be out-of-gauge cargo. 2. **Foundation and services** — concrete, electrical supply and panel, compressed air. 3. **Commissioning and training** — how many people, how many days, in which language. 4. **Critical spare parts** — roll bearings, a servo drive, sensors. Not being written in the quotation does not make them disappear. It only keeps them out of your budget. #### Putting quotations on the same footing Six lines have to be defined the same way in every offer. If they are not, what you are comparing is not price but uncertainty: | Line | Why it matters | |---|---| | Profile drawing and tolerance | Defines what the line has to make | | Thickness range and material | Sets the force, and therefore the mechanics | | Station count | The biggest step in the price | | The thickness at which speed was measured | "40 m/min" on which sheet | | Cut-off type and tolerance | Stop-and-cut, flying or die | | Commissioning, training, spares | In the price or not | #### Conclusion With a roll forming line the right question is not "how much" but **"what does my profile need"**. Once the drawing, the thickness range, the material, the target speed and the annual quantity are on the table, the price follows, and the offers in front of you become comparable for the first time. The families we build are on the [roll forming lines](https://servosteel.com.tr/en/roll-forming-lines) page, the process itself is explained in [what roll forming is](https://servosteel.com.tr/en/academy/what-is-roll-forming), and the sectors these lines run in are under [applications](https://servosteel.com.tr/en/applications). How we work as a manufacturer is on the [company page](https://servosteel.com.tr/en/about-us). Before you order, the [nine checks on a line manufacturer](https://servosteel.com.tr/en/academy/how-to-check-a-coil-line-manufacturer) cover the company rather than the machine. If your drawing is ready, [send it with the quotation form](https://servosteel.com.tr/en/request-quote) and you will get a line layout and a technical offer back. Frequently asked questions: Q: Why is there no catalogue price for a roll forming line? A: The profile sets the price, not the name of the machine. Two sections of the same width can need a 14-station line and a 26-station line, depending on how many bends they have and how deep the section is, and that difference runs through the tooling, the frame length and the motor power. This is why no serious quotation is issued before the drawing is seen. Q: How much does in-line punching change the cost? A: It turns a machine into a production cell: a servo punch station, the die, its own hydraulic or servo drive, and a measuring system that holds hole position along the length. The alternative is punching afterwards on a press, which is a second machine, a second operator and a second handling step. Q: Flying shear or stop-and-cut? A: Stop-and-cut is cheaper: the line stops, cuts and accelerates again. A flying shear cuts at line speed, so it shortens cycle time, but it is expensive mechanically and in the control system. The decision follows quantity: for short runs stopping is sensible, for high volumes the seconds lost pay for the shear. Q: Why is roll tooling a separate budget line? A: The line is the frame; the tooling is the product. When you add a second profile you are buying tooling, not another line. Say at the quotation stage how many profiles the line has to make: a line delivered with three tool sets is not priced like a line with one. ### How to Check a Coil Line Manufacturer Before You Order Source: https://servosteel.com.tr/en/academy/how-to-check-a-coil-line-manufacturer · Published 2026-09-20 · Updated 2026-09-20 Short answer: Quotations for a coil processing line look alike on paper, so check the company rather than the specification: who actually builds the machine, who designs the roll tooling, which control brand you can service locally, what the acceptance test proves, how long a critical spare takes, who commissions and trains, who signs the conformity documents, and whether the references run a line like yours. A trader can answer the first question in words; only a manufacturer can answer it with a plant address and machines in build. Quotations for a coil processing line all look similar on paper. Thickness, width, line speed, motor power, a list of units. The specification is the easy part of the decision: numbers can be written by anyone, and two quotations with the same table can come from a factory of three hundred people and from an office of three. So check the company, not only the specification. The nine questions below can be asked by e-mail in an afternoon, and the answers tell you more than any brochure. If the shortlist also crosses continents, read them together with [what distance costs you](https://servosteel.com.tr/en/academy/where-to-buy-a-coil-processing-line): customs, freight time and service response are a separate list of questions. #### 1. Manufacturer or trader? Ask for the **plant address** and a video call from the shop floor, on machines that are in build right now. A manufacturer will show you a line half assembled, with its frame welded and its stands being machined. A trader will show you a finished machine, a showroom or a catalogue. This is not about status. It decides what happens when you need an engineering change during the build, a spare part in two years, or a modification when your product changes. #### 2. Who owns the roll tooling design? On a roll forming line the tooling is the product. Send your profile drawing and ask **who designs the flower pattern and where the rolls are cut**. If the answer is a subcontractor, ask what happens when the profile needs correction after the first trials, and how long that loop takes. The same question applies to a [slitting line](https://servosteel.com.tr/en/coil-slitting-lines), in a different form: who sets the knife and spacer program for the strip widths you run. #### 3. Which control system, and can you service it locally? Ask the **brand of the PLC, HMI and drives**, and then ask a second question that matters more: is there a distributor with spare stock in your country? A control fault on a brand you can source locally is a day. On a brand nobody stocks near you it is a shipment, a customs entry and a week of stopped production. Ask also whether the **program is handed over and backed up**, and whether you can get parameter access for your own maintenance team. #### 4. Is the line one set, or parts bought in? A line assembled from units by different makers is not wrong in itself, but somebody has to own the interfaces: the decoiler brake against the loop control, the feeder against the press signal, the stacker against line speed. When each unit has its own supplier, the integration problem lands on you. Ask whether [decoiler](https://servosteel.com.tr/en/machines/decoilers), straightener, [feeder](https://servosteel.com.tr/en/machines/servo-feeders), forming section, shear and [stacker](https://servosteel.com.tr/en/machines/automatic-stacker) come from **one manufacturer**, and if not, who is responsible for the line as a whole. #### 5. What does the acceptance test actually prove? Every quotation mentions a factory acceptance test. What matters is what it contains. Agree in writing, before production starts: - whose **material** the test runs on, in your thickness and grade, - which **section** is produced and how many pieces are measured, - the **tolerances** that count as pass or fail, - who attends, and what happens if a criterion fails. A run on the builder's material proves the machine turns. It does not prove it makes your part. #### 6. Spare parts: the list and the lead time Ask for a **critical spare parts list with a lead time against each item**, and ask which of those items are held in stock and which are made to order. Downtime, not the price of the part, is what a spare costs you. A list without lead times is a price list, not an answer. #### 7. Commissioning and training Who travels to your plant, for how many days, and what is included in the price. Then the part buyers forget: **who trains your operators**, in what language, and whether the training covers changing the tooling and the recipes rather than only pressing start. #### 8. Conformity documents A machine placed on the EU market carries **CE marking, an EU declaration of conformity and a manual in the language of the country where it will be used**, with a technical file behind them. These are not paperwork to sort out on arrival: ask before the order who signs the declaration and who holds the file. The same question, with different documents, applies to every market with its own conformity regime. #### 9. References you can actually call Ask for a reference **running a line of similar capacity to yours**, not a list of logos. Then ask that plant two questions: how long commissioning took from arrival to production, and how the manufacturer responded to the first serious fault. #### How we answer these We build in [our own plant in Istanbul](https://servosteel.com.tr/en/about-us): every unit of the line, from the decoiler to the stacker, is made and assembled by us, which is why the units are sized to each other and one control philosophy runs the line. Our control systems are Schneider, a brand with a global service network, and lines are commissioned on site rather than shipped and left. We have shipped to more than 48 countries; ask which installation is closest to your capacity and what that line runs, and you will get a straight answer. If you are collecting quotations now, [send us the drawing or the capacity you need](https://servosteel.com.tr/en/request-quote). The answer you get back will be a line layout and a technical offer, and you can put the nine questions above to us in the same e-mail. The families we build are [slitting lines](https://servosteel.com.tr/en/coil-slitting-lines), [cut-to-length lines](https://servosteel.com.tr/en/cut-to-length-lines), [roll forming lines](https://servosteel.com.tr/en/roll-forming-lines) and [press feeding systems](https://servosteel.com.tr/en/machines). Frequently asked questions: Q: How can I tell whether a supplier is the actual manufacturer? A: Ask for the plant address and a video call from the shop floor, on machines currently in build, not a showroom. Then ask who designs and cuts the roll tooling. A company that buys the line from someone else can describe the machine but cannot walk you through its own production of it, and will be slow on engineering changes and spare parts later. Q: What should a factory acceptance test cover? A: Your material, your section and your tolerances, with the acceptance criteria written into the contract before production starts. Agree who attends, how long the run is, how many parts get measured and what happens if a criterion fails. A test on the builder's own material proves the machine runs; it does not prove it runs your job. Q: Why does the control system brand matter? A: Because service is local. A PLC and drives from a brand with distributors and spare stock in your country can be repaired in days; an unfamiliar brand turns a small fault into a shipment. Ask which brand is used, whether the program is handed over and backed up, and who can support it near your plant. Q: What documents does a line need to enter the EU? A: Machinery placed on the EU market carries CE marking, an EU declaration of conformity and an instruction manual in the language of the country of use, with a technical file behind them. Ask in writing who signs the declaration and who holds the file before the order, not at the border. ### What Is Roll Forming? The Process, the Limits and the Cost Source: https://servosteel.com.tr/en/academy/what-is-roll-forming · Published 2026-08-07 · Updated 2026-09-17 Short answer: Roll forming bends strip into a finished profile at room temperature by passing it through consecutive pairs of rolls, each shaping the section a little further. Because the strip is not heated, galvanized coating and pre-applied paint survive. It is the most economical choice for high volumes of the same section; for varied low-volume work, or parts whose section changes along the length, stamping is more flexible. Roll forming is the process of bending strip into a finished profile by passing it through consecutive pairs of rolls, each one shaping the section a little further than the last. The whole method lives in that last clause. The cross-section is **not formed in one hit**. On a fifteen-station line the profile is born in fifteen small steps. That is not a way of slowing production down — it is the reason the line can run continuously and fast, because the material is never asked to deform sharply at any single point. #### Why it is called cold roll forming The strip is never heated. Forming happens at room temperature, and the practical consequence is at the surface: **galvanized coating and pre-applied paint survive the process intact**. That is why roof panels, cable trays and solar mounting profiles are made this way from pre-painted (PPGI) and galvanized coil. Heat the strip and the coating would have to be applied afterwards, on a finished profile — far more expensive and rarely as good. There is a second consequence, in the metal rather than on it. Cold bending work-hardens the material at the bend radii, so the finished profile is somewhat stronger than the flat strip it came from. #### The roll forming process, station by station A line starts with a coil and ends with stacked, packed profile. The sequence is usually: 1. **[Decoiler](https://servosteel.com.tr/en/machines/decoilers)** — carries the coil and pays it off under control. 2. **Straightener** — removes coil-set, the curvature the strip retains from being wound. Skip it and the profile will not run straight. 3. **[Servo feeder](https://servosteel.com.tr/en/machines/servo-feeders)** — advances the strip into the line to a measured length. 4. **Punching stations** — where the profile needs holes or slots, they are made in line rather than afterwards. 5. **Roll forming stations** — the section itself is formed here. 6. **Cut-off** — to length, either by hydraulic shear or flying cut. 7. **Stacking** — finished profiles collected ready for packing. The complete family of lines built on this sequence is on the [roll forming lines](https://servosteel.com.tr/en/roll-forming-lines) page. #### Roll forming machine or roll forming line? The two phrases are used interchangeably in conversation, and that is where quotes stop being comparable. A **roll forming machine**, strictly, is step 5 alone — the roll stations that form the section. Strip is often fed by hand or by a separate unit, and cutting is a separate operation. A **roll forming line** is the whole chain, one through seven: coil in one end, packed profile out the other. The difference is not really speed. It is output per operator and dimensional repeatability. If two quotes for what looks like the same machine differ substantially, check which of the two is being priced before concluding anything about the supplier. #### Roll forming vs stamping — how the decision is actually made The choice comes down to quantity, not capability. A press can move between different parts by changing the die; setup is short, but each stroke yields one part. A roll forming line runs continuously, which is what drives the cost per metre down. The practical rule: if you will produce tens of thousands of metres a year of the **same** section, roll forming wins outright. For varied, low-volume work the press side stays more flexible. Where the parts come off a press, the feeding side is its own decision — we cover that in the [servo versus mechanical feeding](https://servosteel.com.tr/en/comparison/servo-vs-mechanical-feeding) comparison. #### When roll forming is the wrong answer Most explanations of the process skip this, and it is exactly what the investment decision turns on. There are two hard limits: **Tooling is cut for one section.** A new profile means a new roll set. Roll forming rewards volume and repetition; it does not reward variety. **The cross-section is constant along the length.** If the part has to change shape along its run, no roll forming line will make it. Where both conditions hold, very little else competes on output per hour. #### What drives the cost of a line There is no list price, because the line is built around your profile. Five things move the number: - The **widest and thickest** strip you need to run — this sizes the frame, the shaft diameters and the drive. - The **line speed** you want. - **How many stations** the section needs to form cleanly. - **Cut-off type** — hydraulic shear or flying cut. A flying cut keeps the line moving during the cut; it costs more and earns it back in output. - Whether the exit end includes **automatic stacking and packing** — see the [automatic stacker](https://servosteel.com.tr/en/machines/automatic-stacker). The first three size the body of the machine; the last two set the level of automation. Send a drawing of the profile and a target annual tonnage and the configuration follows from those. #### Which materials Commonly galvanized steel, pre-painted steel (PPGI), cold-rolled steel, stainless and aluminium. What matters more than the grade is the **thickness and width**, because those size the machine: the same profile is not made on the same line in 0.5 mm and in 2 mm strip. #### Where to go next If the section is already drawn, the tooling design follows from it. If it is not yet fixed, that is fine too — knowing the product, the material and the annual metres is enough to size a line. Product families are on the [roll forming lines](https://servosteel.com.tr/en/roll-forming-lines) page; the coil handling and feeding equipment that sits in front of them is under [machines](https://servosteel.com.tr/en/machines). If you are putting a budget together, [the eight items that set the price of a line](https://servosteel.com.tr/en/academy/roll-forming-line-cost) explains why quotations differ as much as they do. Frequently asked questions: Q: Is a roll forming machine the same as a roll forming line? A: No. A roll forming machine is strictly the roll stations that form the section. A roll forming line is the whole chain — decoiler, straightener, servo feeder, punching, forming, cut-off and stacking — with coil going in one end and packed profile coming out the other. Q: Why is it called cold roll forming? A: The strip is formed at room temperature, so galvanized and pre-painted coatings stay intact. The bends also work-harden the material, making the finished profile somewhat stronger than the flat strip it came from. Q: When is roll forming the wrong choice? A: When you need variety rather than volume, because tooling is cut for one section, and when the part must change shape along its length, which no roll forming line can make. Q: What drives the cost of a roll forming line? A: The widest and thickest strip, the target line speed, the number of forming stations, the cut-off type (hydraulic shear or flying cut) and whether automatic stacking and packing are included. A profile drawing and a target annual tonnage define the configuration. ### Where to Buy a Coil Line: What Distance Really Costs Source: https://servosteel.com.tr/en/academy/where-to-buy-a-coil-processing-line · Published 2026-08-04 · Updated 2026-09-17 Short answer: Decide where to buy a coil line on landed cost and the risk distance creates, not on ex-works price: customs, freight time, whether you can attend the acceptance test, service and spare parts response, time zone and conformity responsibility. Distance matters a lot for bespoke engineering, tight schedules and costly downtime; for standard machines, flexible schedules and strong in-house teams the decision can come down to price. Sooner or later, buying a coil processing line raises the same question: a nearby manufacturer, or the Far East? Asking it as "whose machine is better" is the wrong framing — nobody can answer that impartially. The right question is: **what is distance costing you?** That question has an answer, and it does not rest on quality claims. It rests on measurable things: the customs regime, freight time, whether you can attend the acceptance test, how fast a service engineer can reach you, how many days a spare part takes. We go through them one by one below — and, at the end, the cases where distance genuinely does not matter. #### 1. The customs regime — the item most often missed The **Customs Union** between Türkiye and the European Union, in force since 1995, covers industrial products. Machinery falls within it, so a line shipped from Türkiye to the EU is not subject to customs duty. A machine arriving from outside the Union is subject to the Common Customs Tariff and to any trade measures in force. The point here is not the rate — rates depend on the tariff code and on measures in effect, and it is a question **to put to your own importer** while you are collecting quotations. The point is this: of the two figures you are comparing, one may be ex-works and the other delivered to your plant. They are not the same number. Practical rule: compare every quotation on **landed cost** — machine plus freight plus insurance plus duty plus inland transport. #### 2. Freight time and mode A coil line is too heavy and too bulky for air freight; in practice it travels by road or by sea. Road freight from Türkiye to Europe is measured in days. Sea freight from the Far East to Europe runs to weeks port to port, with port handling and inland transport on top. That difference is not in itself good or bad — if you can **plan around it**, it is not a problem. The problem is a freight time that was never built into your project schedule. The question to ask: is there a fixed date by which the line must be commissioned and producing, and was the shipping window calculated backwards from it? #### 3. Factory acceptance (FAT) — will you actually be there? This is the most concrete effect of distance, and usually the least discussed. A factory acceptance test means the line is run with your own material, and shown to you, before it ships. On paper every quotation includes a FAT. The difference lies in **whether the test actually happens** — and that depends on whether you can get there. From most European cities Istanbul is a direct flight of a few hours; an acceptance test fits into a one- or two-day trip. The same visit to the Far East is a different scale in flight time, visa process and calendar. The consequence is predictable: where travel is hard, the FAT tends to become a video recording. A video does not show that the line runs with your material. Ask this: **how many people will attend the FAT, how many days will it take, with which material and against which acceptance criteria?** Get the answer in writing. #### 4. Commissioning and service access The job does not end when the machine arrives; that is when it starts. How quickly a commissioning team can be on site depends on distance and on the visa process — and that cuts **in every direction**. An engineer travelling from Türkiye to the EU goes through a visa process too, as does one travelling from the Far East. So set the question of origin aside and ask directly: - In a breakdown, **within how many days** can a field team be at my plant? - Does that figure include visas? - Can a fault be diagnosed remotely — is there external access to the control system? The third question is the cheapest insurance you can buy: remote diagnosis removes a large share of the situations that would otherwise require someone to travel. #### 5. Spare parts — the real cost is downtime With spare parts, the expensive thing is not the part. It is **the downtime**. The arithmetic is simple: if your line processes a given tonnage per day, three weeks down means three weeks of that tonnage's added value. The wait for a critical bearing or hydraulic component is in direct proportion to distance and customs handling. The price of the part disappears inside that picture. What to ask for at quotation stage: **a critical spare parts list with a lead time against each item.** Items held in stock and items made to order should be listed separately. A supplier who will not provide that list has transferred the downtime risk to you. #### 6. Time zone and remote support A small-looking item that is felt daily. Istanbul is one to two hours from Central Europe, so working hours overlap almost entirely. The Far East is six to seven hours away, and the overlapping window shrinks to a couple of hours. That is what decides whether the answer arrives the same day or the next one when the line stops. #### 7. Conformity responsibility — the most skipped clause If the machine is going into the EU, who carries conformity (CE) responsibility **must be explicit in the contract.** Where the manufacturer sits outside the EU, part of the obligation passes to the importer — which usually means you. EU machinery legislation is currently being renewed; have the manufacturer confirm which framework applies to your delivery date. Questions to ask: who signs the declaration of conformity, who holds the technical file, and is there an authorised representative in the EU? #### Where the Far East genuinely wins This section is what makes the article honest. There are cases where distance stops mattering: - **You are buying a standard, catalogue machine.** Where no bespoke engineering is involved, the FAT carries less weight. - **You can absorb a long lead time.** If your calendar has slack, weeks are not a problem. - **Your own technical team is strong.** If you can commission and maintain in-house, service distance hurts less. - **You are buying many identical machines.** Scale dissolves the per-unit logistics and travel cost. If all four are true for you, distance really is secondary and the decision comes down to price. #### Decision table | Your situation | How much distance matters | |---|---| | Bespoke engineering, designed around your material | **A lot** — being able to attend the FAT is decisive | | Tight project schedule, fixed commissioning date | **A lot** — freight time enters the schedule directly | | Continuous production, high cost of downtime | **A lot** — spare parts and service response | | You sell into the EU | **Medium to high** — conformity responsibility and duty | | Standard machine, flexible schedule, strong in-house team | **Little** — the decision can come down to price | #### Conclusion There is no single right answer to "where should I buy"; it depends on your production pattern. But the way to compare correctly is settled: put **landed cost and the risk distance creates** side by side — not ex-works prices. Once the shortlist is down to two or three names, the questions change from geography to the company itself: who actually builds the machine, who owns the tooling design, what the acceptance test proves. Those are set out in [nine checks on a line manufacturer](https://servosteel.com.tr/en/academy/how-to-check-a-coil-line-manufacturer). If it is a roll forming line you are buying, we cover the process itself in [what roll forming is](https://servosteel.com.tr/en/academy/what-is-roll-forming). We collected the six technical lines that make quotations comparable in [what a coil slitting line costs](https://servosteel.com.tr/en/academy/coil-slitting-line-cost). To decide which line fits your work, see [coil slitting lines](https://servosteel.com.tr/en/coil-slitting-lines), [cut-to-length lines](https://servosteel.com.tr/en/cut-to-length-lines) and [roll forming lines](https://servosteel.com.tr/en/roll-forming-lines), or the [machines](https://servosteel.com.tr/en/machines) section for individual units. Servosteel is a Turkish **manufacturer** — not a supplier or an intermediary; the lines are engineered, built and tested in its own facility in Sancaktepe, Istanbul. If you would like to attend an acceptance test, [write to us](https://servosteel.com.tr/en/request-quote) with your sheet thickness, coil weight and target dimensions and we will come back to you. Frequently asked questions: Q: Is a machine shipped from Türkiye to the EU subject to customs duty? A: No. The Customs Union between Türkiye and the EU, in force since 1995, covers industrial products including machinery. A machine arriving from outside the Union is subject to the Common Customs Tariff and any trade measures in force. Q: Why does distance affect the factory acceptance test? A: Every quotation includes a FAT on paper; what matters is whether it actually happens. Where travel is hard it tends to become a video recording, which does not prove the line runs with your material. Get attendance, duration, material and acceptance criteria in writing. Q: What is the real cost of spare parts? A: Downtime, not the part. The wait for a critical component grows with distance and customs handling, so ask for a critical spare parts list with a lead time against each item, separating stock items from made-to-order ones. Q: When does buying from the Far East make sense? A: When all four hold: you are buying a standard catalogue machine, can absorb a long lead time, have a strong in-house team for commissioning and maintenance, and are buying many identical machines. Then distance really is secondary and the decision comes down to price. ### What Does a Coil Slitting Line Cost? 8 Price Drivers Source: https://servosteel.com.tr/en/academy/coil-slitting-line-cost · Published 2026-08-04 · Updated 2026-09-17 Short answer: Eight items set a slitting line's price, and coil capacity moves it hardest; sheet thickness and grade, width, strip count, levelling, automation, the recoiler and the control architecture follow. Freight, foundation and utilities, commissioning and critical spares are often missing from quotations. A realistic budget needs maximum coil weight, thickness range with material grade, and maximum width with target strip dimensions. You will not find a price list here — and there is a reason. A coil slitting line is not sold off the shelf. The same phrase, "a 1,250 mm slitting line", can describe two machines that differ by a factor of two, depending on strip thickness and coil weight. Rather than asking for a price, it pays to understand **what sets the price**: it lets you build a realistic budget and read incoming quotations correctly. The eight items below are what a slitting line actually costs money for. At the end you will find the four expenses quotations usually leave out, and a method for bringing different offers onto the same basis. #### 1. Coil capacity — the biggest step This is the single item that moves the cost hardest. As coil weight rises, the mandrel diameter, frame section, hydraulic unit and drive power all grow together — and none of them can be reinforced afterwards, because they are built for that load from the start. The difference comes in steps, not in a straight line: going from 3 to 6 tonnes does not add the same proportion as going from 10 to 15. You can work out which band your own coils fall into with the [coil calculator](https://servosteel.com.tr/en/calculators); we walk through how weight follows from outer diameter, core diameter and width in [how to calculate coil weight and length](https://servosteel.com.tr/en/academy/how-to-calculate-coil-weight-and-length). #### 2. Sheet thickness and material grade Cutting force depends on thickness multiplied by the material's yield strength. That is why 2 mm stainless demands a far heavier machine than 2 mm mild steel — the same thickness, a different line. As thickness rises, the knife shaft thickens, intermediate supports are added and frame rigidity goes up. If a quotation says "up to 5 mm", always ask **at what width, with how many strips and in which material** that figure holds; change any one of the three and it stops being true. #### 3. Width — dearer than it looks Width inflates cost in the most deceptive way, because its effect is not linear. A knife shaft behaves like a beam supported at both ends. Under cutting load it deflects at the centre, and deflection grows with the cube of the span, while the shaft's resistance grows with the fourth power of its diameter. So when width rises by 25 %, holding deflection at its old level takes more than a few extra millimetres of shaft diameter — and the bearings, frame and drive grow with the shaft. The practical consequence: **buying a line wider than you need costs more than buying one heavier than you need.** Set your maximum width realistically. #### 4. Number of strips and the knife assembly Cutting a coil into 4 strips and into 20 strips are not the same machine. As the strip count rises, so do the knives and spacer rings, the separator discs and the per-strip tension control. Here is the point that gets missed: because of sheet thickness tolerance, strips cut from the same coil come out **at slightly different lengths**. Without separator discs and individual tension control, the short strip goes taut while the long one stays slack. That is why the tension system has to be sized for your strip count — it is hard to add later. #### 5. The levelling unit Levelling is a separate machine inside the line and adds a substantial item on its own. The gap between simple straightening and precision levelling is not small either: as roll count rises, roll diameter falls and backup rolls are added, both flatness quality and price go up. The deciding criterion is your customer's tolerance. If your strips are heading to a [roll forming](https://servosteel.com.tr/en/roll-forming-lines) or tube line, levelling is effectively mandatory — a curved strip wanders off centre in the forming line. Adding it later costs more than specifying it up front, because it means redoing the layout and the drives. #### 6. Automation and knife changing Recipe memory, servo positioning and quick knife changing raise the cost — and repay it directly in production time. Building the knife assembly in a cassette off the line, rather than on it, cuts changeover from hours to minutes. In a plant that changes width more than once a day, that alone justifies the investment; in a plant that changes once a month, it is money spent for nothing. **Choose the automation level from your production pattern, not from the technology on display.** #### 7. Recoiler and tension system Recoiler capacity has to match the decoiler — unwinding a 10-tonne coil onto a 6-tonne recoiler stops the line halfway. Loose winding, meanwhile, causes telescoping during transport and in the next operation, which means damaged edges. #### 8. Control architecture and brand choice The drive and PLC brand affect both the initial price and the lifetime cost. Choosing a widely available brand makes spare parts and service easy to reach; a custom-built control board can mean weeks of waiting when something fails. On Servosteel lines the control architecture is built on **Schneider Lexium and Altivar** drives, and the whole line is run from a single panel. #### Four items the quotation does not show The machine price is not the whole investment. When you build the budget, ask about these four separately: - **Freight and insurance** — line weight and volume make this a real item, depending on the country - **Foundation and utilities** — concrete foundation, electrical supply, compressed air - **Commissioning and training** — how many days on site, how many people, what scope - **Critical spare parts set** — knives, bearings, hydraulic components; held in stock or not, and at what lead time If these are not written in the quotation, it does not mean they do not exist. It means they are not yet visible in your budget. #### The real cost: scrap The fact most often overlooked in the investment decision is this: **the line is paid for once, but scrap is paid for again every year the line runs.** When the master coil width does not divide exactly by the strip width, the remainder becomes scrap. Cutting 120 mm strips from a 1,250 mm coil with 10 mm edge trim gives 10 strips and leaves 40 mm over; with the trim, scrap comes to 4 %. Across annual tonnage, a 2 % difference in scrap comes to 200 tonnes of steel a year on a line slitting 10,000 tonnes. Run the [slitting yield calculator](https://servosteel.com.tr/en/calculators) with your own dimensions. We have collected the other ways to bring scrap down in [six ways to cut your sheet scrap rate](https://servosteel.com.tr/en/academy/reducing-sheet-metal-scrap-rate). #### Bringing quotations onto the same basis Offers from different manufacturers are rarely comparable as they arrive. To put them on the same footing, make sure these six lines are **identical** in every quotation: | Line | Why it matters | |---|---| | Maximum coil weight and outer diameter | The real definition of capacity | | Thickness range + material grade | "5 mm" means nothing on its own | | Maximum width and minimum strip width | Sets the shaft and the knife assembly | | Levelling included, and how many rolls | A large item in its own right | | Line speed — measured at which thickness | Speed is not the same at every thickness | | Scope of commissioning, training and spares | Where most of the difference hides | A price comparison made before those six lines match is a comparison of different machines. #### Conclusion To build a budget you need three numbers: **maximum coil weight**, **thickness range and material grade**, and **maximum width with target strip dimensions**. Any figure quoted without those three is a guess. To work out which band you fall into, look through our [coil slitting lines](https://servosteel.com.tr/en/coil-slitting-lines) page, and see the selection criteria step by step in [how to choose a coil slitting line](https://servosteel.com.tr/en/academy/how-to-choose-a-slitting-line). If you are undecided between slitting and cut-to-length, see the [comparison](https://servosteel.com.tr/en/comparison/slitting-vs-cut-to-length). For sizing and a quotation specific to your project, [get in touch](https://servosteel.com.tr/en/request-quote) — send your sheet thickness, coil weight and target strip dimensions and we will come back to you. Frequently asked questions: Q: Why is there no price list for a coil slitting line? A: It is not an off-the-shelf product: the same 1,250 mm slitting line can describe two machines that differ in price by a factor of two, depending on strip thickness and coil weight. Knowing what sets the price lets you read quotations correctly. Q: Why does width raise the cost more than expected? A: The knife shaft deflects at the centre under cutting load; deflection grows with the cube of the span, while the shaft's resistance grows with the fourth power of its diameter. Buying a line wider than you need costs more than buying one heavier than you need. Q: Which costs do quotations usually leave out? A: Freight and insurance, the concrete foundation with electrical supply and compressed air, commissioning and training, and a critical spare parts set. If they are not written in the quotation, they are simply not yet visible in your budget. Q: How do I compare slitting line quotations fairly? A: Make six lines identical in every offer: maximum coil weight and outer diameter, thickness range and material grade, maximum width and minimum strip width, levelling and roll count, the thickness at which line speed was measured, and the scope of commissioning, training and spares. ### Six Ways to Cut Your Sheet Scrap Rate Source: https://servosteel.com.tr/en/academy/reducing-sheet-metal-scrap-rate · Published 2026-08-03 · Updated 2026-09-17 Short answer: Cutting sheet scrap starts with measuring it: scrap rate is tonnes purchased minus tonnes shipped as product, divided by tonnes purchased. The first three steps need no investment: match strip width to coil width (the highest-impact one), set edge trim by measurement, and correct knife clearance and feed setup. Tracking thickness tolerance, running heavier coils and nesting blanks come next. In a plant that processes sheet metal, the largest cost item is not the machine but the **material**. And part of that material never becomes product: edge trim, leftover strip, the gap between blanks, line start and line end. This loss is usually treated as "normal" and never measured. Yet scrap is a cost **paid again every year**: in a plant processing 10,000 tonnes a year, every 1% of scrap is 100 tonnes bought at coil price and sold at scrap price. This article covers where it comes from and which interventions genuinely work. #### Measure first: you cannot reduce what you do not know The simple definition: ``` Scrap rate (%) = (Tonnes purchased − Tonnes shipped as product) ÷ Tonnes purchased × 100 ``` Most plants do not know this number, because scrap sales are tracked in a separate account and the "revenue" psychologically offsets the loss. But scrap sells far below what you paid for the coil — the difference is a net loss. One month is enough to start: incoming coil tonnage, outgoing product tonnage, scrap tonnage sold. Add those three and the picture appears. #### 1. Match strip width to coil width On a slitting line this is the largest and most easily corrected source of scrap. If the master coil width does not divide cleanly by the strip width, the remainder is lost on every single coil. **Example:** you cut 120 mm strips from a 1,250 mm coil, with 10 mm total edge trim. ``` Usable : 1,250 − 10 = 1,240 mm Strips fit : 1,240 ÷ 120 = 10.33 → 10 Used : 10 × 120 = 1,200 mm Remainder : 1,240 − 1,200 = 40 mm Total scrap : 10 + 40 = 50 mm → 4.0% ``` Now widen the strip to **124 mm**: ``` Strips fit : 1,240 ÷ 124 = 10.0 → 10 Used : 1,240 mm Total scrap : 10 mm → 0.8% ``` The same coil, the same number of strips, and **scrap has dropped to a fifth.** The only change is fitting strip width to coil width. This is not always possible — if the customer's dimension is fixed, strip width is not negotiable. But **coil width** usually is. Asking your supplier for 1,210 mm (10 × 120 + 10) instead of 1,250 mm achieves the same result from the other direction. Try your own dimensions in the [slitting yield calculator](https://servosteel.com.tr/en/calculators); after a few combinations you will see which width fits. #### 2. Trim only as much edge as you actually need Edge trim is mandatory: the coil edge carries cracks and irregularities from rolling. But in most plants the amount trimmed is set by **habit**, not by measurement. Trimming 6 mm instead of 10 mm saves thousands of square metres a year on a 1,250 mm coil. The right figure depends on the material and the supplier — with a supplier whose edge quality is good, less trim is enough. A practical method: take samples from a few coils with reduced trim, check the edge quality, and standardise on the lowest acceptable value. #### 3. Optimise strip layout in progressive dies On the press side, scrap comes from somewhere else: the web between blanks and the remainder at the strip edge. **Nested layout** is the strongest tool here. When blanks are staggered or rotated instead of run in a straight row, more parts come out of the same strip. The price is a more complex die — but the die is paid for once, scrap is paid for on every stroke. The decision is a simple comparison: the extra die cost of the layout change versus the material saved across annual tonnage. On high-volume jobs, nesting almost always wins. We also cover this in [progressive dies and servo feeders](https://servosteel.com.tr/en/academy/servo-feeder-selection-for-progressive-dies). #### 4. Reduce start-of-line and end-of-line losses Every coil change produces scrap at both ends: while the new coil is threaded through the line, and as the old coil's tail runs out. This loss is **per coil** — so the smaller the coil, the larger the total. A numerical example: if each coil change loses 8 metres, - **3-tonne coil** (roughly 150 m) → 5.3% loss - **10-tonne coil** (roughly 500 m) → 1.6% loss The same line, the same operator, **more than a threefold difference.** Running heavier coils reduces not only downtime but scrap directly. You can find your coil length with the [coil calculator](https://servosteel.com.tr/en/calculators); the method is explained in [how to calculate coil weight and length](https://servosteel.com.tr/en/academy/how-to-calculate-coil-weight-and-length). On lines with a welder, this loss is nearly eliminated: the head of the new coil is welded to the tail of the old one and the line never empties. #### 5. Account for thickness tolerance Material from your supplier is not at nominal thickness; a tolerance of up to ±5% is normal. Because you buy by the **tonne** and produce by the **metre**, this hits your pocket directly. If you order 2 mm and receive 2.1 mm, the same tonnage yields **5% fewer metres**. Your part count per tonne falls and your unit cost rises — and this is usually not even recorded as "scrap", it just shows up as poor yield. Measure incoming material periodically. If the tolerance is consistently on the plus side, you have concrete data to take to your supplier. #### 6. Do not produce seconds through wrong cutting parameters Scrap is not only material that is cut off and thrown away. A burred edge, a crushed surface or an out-of-tolerance part is also scrap — and it is scrap with labour and energy already spent on it. On the slitting side the usual cause is **knife clearance**: clearance not matched to sheet thickness produces burr. On the press side it is pitch drift, which throws the die and punch off centre. Getting these two settings right visibly reduces second-quality output — and it is the cheapest intervention on this list, because it requires only adjustment. #### Summary: where to start | Intervention | Difficulty | Impact | |---|---|---| | Matching strip and coil width | Low | Very high | | Setting edge trim by measurement | Low | Medium | | Knife clearance and feed setup | Low | Medium | | Tracking thickness tolerance | Medium | Medium | | Heavier coils + loading car | Medium | High | | Nested strip layout | High | High | The first three **require no investment** — only measurement and adjustment. Measure your scrap rate for one month, apply those three and compare the following month: nothing has to be bought or delivered, so the result shows up in the very next measurement. Try your own dimensions in the [our coil slitting lines](https://servosteel.com.tr/en/coil-slitting-lines), try the [calculators](https://servosteel.com.tr/en/calculators), and [get in touch](https://servosteel.com.tr/en/contact-us) if you would like to discuss line sizing. Frequently asked questions: Q: How much can matching strip width to coil width reduce scrap? A: Cutting 120 mm strips from a 1,250 mm coil with 10 mm trim leaves 50 mm total scrap, or 4.0%. Widening the strip to 124 mm still gives 10 strips from the same coil and cuts scrap to 10 mm, or 0.8%. Q: Does coil size affect scrap? A: Yes. Start and end losses occur per coil: with 8 metres lost per change, a 3-tonne coil of roughly 150 m loses 5.3%, while a 10-tonne coil of roughly 500 m loses 1.6%. On lines with a welder the loss is nearly eliminated. Q: Why does thickness tolerance behave like scrap? A: You buy by the tonne and produce by the metre, so material ordered at 2 mm but delivered at 2.1 mm yields 5% fewer metres from the same tonnage. It is rarely recorded as scrap; measuring incoming material gives you data to take to the supplier. Q: Which scrap measures require no investment? A: Matching strip and coil width, setting edge trim by measurement, and getting knife clearance and feed setup right need only measurement and adjustment. Nothing has to be bought, so comparing one month of scrap measurement before and one after shows the result directly. ### How to Choose a Servo Feeder: A Practical Guide Source: https://servosteel.com.tr/en/academy/how-to-choose-a-servo-feeder · Published 2026-08-02 · Updated 2026-09-17 Short answer: Do not select a servo feeder from a single catalogue figure; check three things: peak speed covers your line, roller pressure can be tuned to your material, and synchronization with the press, including pilot release, is fully implemented. Correct sizing needs sheet thickness and grade, strip width, pitch range, press strokes per minute and coil weight. Servosteel standard feeders handle 0.4–4.0 mm thickness and widths up to 1600 mm. The servo feeder sets the rhythm of a press line: it delivers strip to the die at the right length, at the right moment, repeatably. When it is chosen wrongly, the problem does not show up in the feeder — it shows up **in the part**: drifting pitch, lost tolerance, rising scrap. This guide walks through the parameters to settle before requesting a quote. If you are still weighing a mechanical feeder, start with the [servo vs mechanical comparison](https://servosteel.com.tr/en/comparison/servo-vs-mechanical-feeding). #### 1. What actually determines pitch accuracy? The accuracy figure in a catalogue means little on its own; in the field it emerges from three things combined. **Servo motor and gearbox.** Closed-loop control corrects position continuously using encoder feedback. In an open-loop system the motor "thinks" it has moved, while in reality it may have slipped. **Roller pressure and grip.** The strip must not slip between the rollers. Too little pressure and the pitch falls short; too much and it marks the surface and crushes thin material. On Servosteel feeders the feed rollers are **Ø85 mm**; the larger diameter increases the contact area and reduces slip. **Strip inertia.** Heavy, wide strip loads the drive during acceleration and deceleration. The same feeder may not hold on 4 mm material the accuracy it shows on 0.5 mm — which is why you should always ask **at what thickness and width** the accuracy figure was measured. #### 2. Feeding speed: do not confuse average with peak This is the most common mistake in selection, and it leads directly to buying the wrong machine. The **free feeding speed** quoted in catalogues (35 m/min on the Servosteel standard series) is the speed at which the feeder runs uninterrupted. But on a press line it never runs uninterrupted: it stops at every stroke, the press comes down, then it accelerates again. Average advance is simple: ``` Average speed (m/min) = pitch (mm) × strokes/min ÷ 1000 ``` For a 250 mm pitch at 40 strokes/min that is **10 m/min**. It sounds modest — but the feeder must deliver those 250 mm inside the short window when the press is not closed. The **instantaneous peak speed** it must reach in that window is several times the average. Selection is made on peak speed. A feeder chosen from the average comes back from site as "it cannot keep up". You can work out your own line's output and consumption with the [feed calculator](https://servosteel.com.tr/en/calculators). #### 3. Is the material range right? Servosteel standard servo feeders handle **0.4–4.0 mm** thickness and strip widths **up to 1600 mm**. Both ends of that range matter: - **Lower end:** on very thin material, pressure that is not finely adjustable crushes and ripples the surface. - **Upper end:** thick material needs more holding force; roller pressure and drive torque must cover it. Stainless and high-strength steel demand more force than mild steel of the same thickness. Share your material list up front. #### 4. Do you need straightening? Strip coming off a coil carries curvature memory (coil set). If that curvature stops the material entering the die cleanly, there are two routes: This series also comes in two bodies: [Mini Straightener Servo Feeders](https://servosteel.com.tr/en/machines/straightener-servo-feeders/mini) and [Cased Straightener Servo Feeders](https://servosteel.com.tr/en/machines/straightener-servo-feeders/cased). **Separate straightener + feeder** — sensible if you are adding to an existing line or the straightening demand is heavy. **[Straightener servo feeder](https://servosteel.com.tr/en/machines/straightener-servo-feeders)** — both operations in one frame. The line gets shorter, there is a single control panel, and the synchronization problem between two machines disappears. Roller count follows the material: thin, surface-critical sheet needs more (11–13), thick material fewer (7–9). If floor space is tight and coils go up to 10 tonnes, a [compact line](https://servosteel.com.tr/en/machines/compact-lines) that puts decoiler, straightener and feeder on one platform solves layout and commissioning in a single step. #### 5. Press synchronization and pilot pins The feeder must talk to the press. The press cam signal is wired to the feeder, and feeding is timed against the press dead centre. **Pilot pin release** is a critical function: pilot pins in the die pull the strip into its exact position in the last millimetre. For that to happen, the feeder must **release** its grip at that moment. Without release the pins cannot pull the strip — either a pin breaks or part tolerance drifts. If you run progressive dies, this function is not optional. We covered the subject separately in [progressive dies and servo feeders](https://servosteel.com.tr/en/academy/servo-feeder-selection-for-progressive-dies). #### 6. Die memory: this is where the real gain is If you run long series with a single die, memory hardly matters. If you change dies during a shift, the picture reverses. Servosteel feeders store recipes for **up to 250 dies**: pitch, speed, ramp and pressure values are saved under the die name. At changeover the operator picks from the list and setup is done. That has two effects: changeover drops from minutes to seconds, and **dependence on a specific operator disappears**. The second is usually worth more — production quality does not fall on the day your experienced operator is away. #### 7. Mini series or standard series? The mini series saves floor space and cost on narrow strip and small presses. **Pitch accuracy is identical to the standard series** — "mini" does not mean "less accurate". The model lists and size ranges of the two series are on separate pages: [Mini Servo Feeders](https://servosteel.com.tr/en/machines/servo-feeders/mini) and [Cased Servo Feeders](https://servosteel.com.tr/en/machines/servo-feeders/cased). Its limits are set by strip width and coil weight. If you run narrow strip today but may widen in the near future, the standard series is the safer choice: scaling up a feeder means buying a new machine. #### The five numbers you need for selection Supply these five and correct sizing takes one round: | Parameter | Why it is needed | |---|---| | Sheet thickness and grade | Holding force and pressure setting | | Strip width | Roller length and frame selection | | Pitch (min–max) | Peak speed calculation | | Press strokes per minute | Peak speed calculation | | Coil weight | Decoiler capacity and line layout | If you do not know the coil weight, the [coil calculator](https://servosteel.com.tr/en/calculators) will give it to you; we explain the method in [how to calculate coil weight and length](https://servosteel.com.tr/en/academy/how-to-calculate-coil-weight-and-length). #### Conclusion A servo feeder is not selected from a single catalogue figure. Three things decide it: whether **peak speed covers your line**, whether **pressure can be tuned to your material**, and whether **synchronization with the press — including pilot release — is fully implemented**. For product detail see the [servo feeders](https://servosteel.com.tr/en/machines/servo-feeders) page, and [request a quote](https://servosteel.com.tr/en/request-quote) with the five numbers above — our engineering team will size it to your line. Frequently asked questions: Q: Why is average feeding speed different from peak speed? A: Average speed is pitch × strokes per minute ÷ 1000, so a 250 mm pitch at 40 strokes/min averages 10 m/min. The feeder must deliver each pitch in the short window when the press is open, so the peak speed it needs is several times the average; select on peak speed. Q: When should I choose a straightener servo feeder? A: When coil set stops the strip entering the die cleanly: straightening and feeding share one frame, the line gets shorter, there is one control panel and no synchronization problem between two machines. Thin, surface-critical sheet needs 11–13 rollers, thick material 7–9. Q: Is a mini servo feeder less accurate? A: No. Pitch accuracy is identical to the standard series; the mini series saves floor space and cost on narrow strip and small presses. If you may widen your strips in the near future, the standard series is safer, because scaling up a feeder means buying a new machine. Q: What does die memory give you? A: Servosteel feeders store pitch, speed, ramp and pressure values for up to 250 dies. Changeover drops from minutes to seconds, and production no longer depends on a specific operator. ### Coil Weight and Length: Formula, Example and Free Calculator Source: https://servosteel.com.tr/en/academy/how-to-calculate-coil-weight-and-length · Published 2026-08-02 · Updated 2026-09-17 Short answer: Coil weight is annulus area × width × density: Weight (kg) = π/4 × (OD² − ID²) × W × ρ / 1,000,000, with diameters and width in mm and density in g/cm³. Strip length is the annulus area divided by sheet thickness. For example, a steel coil with 1,400 mm OD, 508 mm core, 1,250 mm width and 2 mm thickness weighs about 13.1 tonnes and holds about 668 m of strip. Knowing the weight of a coil and the length of strip inside it drives two decisions directly: **what decoiler capacity you need** and **how many hours one coil will run**. Neither can be handled by guesswork. Fortunately both follow from a single geometric fact and can be worked out by hand. If you want the answer right away, use the coil calculator on our [calculators](https://servosteel.com.tr/en/calculators) page; below we explain the reasoning behind it. #### Coil geometry: it all comes down to an annulus Seen from the side, a wound coil is an **annulus**: the band between the outer diameter (OD) and the inner diameter (ID). Its area is: ``` A = π/4 × (OD² − ID²) ``` Here is the key point: when the coil is unwound, that area is **conserved**. The steel is no longer a ring but a long rectangle — yet the cross-section is the same. One side of that rectangle is the sheet thickness (t) and the other is the strip length (L), so: ``` A = L × t → L = A / t ``` Length is nothing more than area divided by thickness. #### The weight formula For weight, multiply the annulus area by the coil width (W) to get volume, then multiply by density (ρ): ``` Weight (kg) = π/4 × (OD² − ID²) × W × ρ / 1,000,000 ``` OD, ID and W are in millimetres and ρ is in g/cm³. That division by one million is the unit factor converting a mix of mm³ and g/cm³ into kilograms — it is the detail most often skipped. ##### Common densities | Material | ρ (g/cm³) | |---|---| | Steel | 7.85 | | Stainless | 7.90 | | Aluminium | 2.70 | | Copper | 8.96 | Note that aluminium is roughly **one third** the weight of steel: a coil with identical geometry comes out at 34% of the steel figure. Choosing decoiler capacity without looking at the material is therefore misleading. #### Worked example Suppose we have this coil: - Outer diameter: **1,400 mm** - Inner diameter (core): **508 mm** - Width: **1,250 mm** - Thickness: **2 mm** - Material: steel (7.85 g/cm³) **1. Annulus area** ``` A = π/4 × (1400² − 508²) A = π/4 × (1,960,000 − 258,064) A = π/4 × 1,701,936 ≈ 1,336,697 mm² ``` **2. Weight** ``` 1,336,697 × 1,250 × 7.85 / 1,000,000 ≈ 13,116 kg ``` About **13.1 tonnes**. This coil calls for a 15-tonne decoiler; the 12-tonne series will not do. **3. Strip length** ``` L = 1,336,697 / 2 ≈ 668,349 mm ≈ 668 m ``` #### How the result drives line selection Once you know the length, you also know **how long the coil will last**. Consider a press line running a 250 mm pitch at 40 strokes per minute: ``` Per minute: 250 × 40 = 10,000 mm = 10 m Per hour: 10 × 60 = 600 m ``` A 668 m coil lasts roughly **1.1 hours** on that line. That means about 7 coil changes per shift — and every change is downtime. At this point two options appear: heavier coils (a bigger decoiler) or faster coil changes (a loading car). Without the calculation, that discussion cannot even start. #### Three common mistakes **Ignoring the core.** Treating the coil as a solid cylinder instead of subtracting the inner diameter inflates the weight badly. A 508 mm core is about 13% of the cross-section on a 1,400 mm coil. **Trusting the nominal thickness.** Sheet tolerance can reach ±5%. Because length is **inversely** proportional to thickness, material that measures 2.1 mm instead of 2 mm yields 5% less length — 636 m instead of 668 m. **Mixing units.** Every length in the formula must be in millimetres. Entering the width in metres makes the result a thousand times too small; this mistake shows up regularly at the quotation stage. #### Working backwards: from weight to length If the supplier gives you the coil weight but not the diameters, you can get the length directly: ``` L (m) = Weight (kg) / (W (m) × t (m) × ρ (kg/m³)) ``` For steel, ρ = 7,850 kg/m³. Let us test it against the example above: ``` 13,116 / (1.25 × 0.002 × 7,850) ≈ 668 m ``` The same answer — proof that the calculation is consistent. Arriving at the same number by two routes is the most practical way to validate your inputs. #### Summary Coil calculation is not intuition, it is two lines of geometry. Weight is annulus area × width × density; length is annulus area ÷ thickness. With those two numbers in hand, decoiler capacity, coil change frequency and shift planning all become discussable. Try it with your own figures using the [coil calculator](https://servosteel.com.tr/en/calculators), and [get in touch](https://servosteel.com.tr/en/contact-us) if you would like to talk line sizing. Frequently asked questions: Q: Why does the coil weight formula divide by 1,000,000? A: With diameters and width in millimetres and density in g/cm³, that unit factor converts the result into kilograms. It is the detail most often skipped; entering the width in metres instead makes the result a thousand times too small. Q: How much does an aluminium coil of the same size weigh? A: Aluminium's density is 2.70 g/cm³ against 7.85 for steel, so a coil with identical geometry comes out at about 34% of the steel figure. Choosing decoiler capacity without looking at the material is therefore misleading. Q: How do I get strip length if I only know the coil weight? A: Use L (m) = Weight (kg) / (W (m) × t (m) × ρ (kg/m³)), with ρ = 7,850 kg/m³ for steel. For 13,116 kg, 1.25 m width and 2 mm thickness, the result is again about 668 m. Q: What are the most common coil calculation mistakes? A: Ignoring the core, trusting the nominal thickness and mixing units. Thickness tolerance can reach ±5%; material measuring 2.1 mm instead of 2 mm yields 5% less length. ### How to Choose a Cut-to-Length Line: 6 Decisive Criteria Source: https://servosteel.com.tr/en/academy/how-to-choose-a-cut-to-length-line · Published 2026-08-02 · Updated 2026-09-17 Short answer: When choosing a cut-to-length line, sheet flatness is the deciding criterion: the cutting unit drives the price, the leveller drives satisfaction. Before requesting a quote, prepare coil weight and width, thickness range and grade, sheet length range and volume, and your flatness tolerance as a number. A flying shear suits short sheets in high volume; a stop-and-cut shear suits long sheets in low volume. A cut-to-length line turns coil into flat sheets at a defined size. The difference from a slitting line is direction: slitting cuts **along** the strip, cut-to-length cuts **across** it and produces sheets. If you are undecided between the two, see the [slitting vs cut-to-length comparison](https://servosteel.com.tr/en/comparison/slitting-vs-cut-to-length). On this line, what the customer is really buying is the **flatness** of the sheet. Hitting the length is easy; producing flat sheet is where the engineering lives. The 6 criteria below put that at the centre. #### 1. How tight is your flatness requirement? Strip coming off a coil carries three kinds of shape defect, each from a different cause: - **Coil set** — longitudinal curvature left by winding. The most common one. - **Crossbow** — transverse curvature; the sheet bows up or down across its width. - **Edge wave** — caused by the edges being longer than the centre; it originates in rolling and is the hardest to correct. A simple straightener removes coil set. Edge wave and defects rooted in internal stress require a **cassette-type precision leveller**, which adjusts roller pressure zone by zone and therefore stretches different regions of the sheet by different amounts. If your sheets go to a laser or a CNC press brake, state your flatness tolerance **as a number**. "It should be flat" means nothing at quotation stage and creates disputes later. #### 2. Cutting unit: shear or flying shear? **Stop-and-cut shear.** The strip stops, the blade comes down, the strip moves again. The cut edge is clean and tolerance is high. The price is speed: the line stops at every cut. **Flying shear.** The shear travels with the strip while cutting, so the line never stops. It delivers high output but the mechanism is more complex and the investment higher. The decision point is simple: with **short sheets in high volume**, stoppage time adds up and a flying shear pays for itself. With **long sheets in low volume**, a stop-and-cut shear is both sufficient and economical. #### 3. How is length tolerance achieved? Sheet length is set by the pitch the feeder delivers. There are two approaches: **Encoder measuring wheel** — a wheel riding on the sheet counts distance. There is a slip risk, but it is simple and inexpensive. **Servo feeding** — a [servo feeder](https://servosteel.com.tr/en/machines/servo-feeders) pushes the strip in measured steps; repeatability is high, and recipe memory makes a length change a matter of seconds. For tight-tolerance work, the servo-fed configuration is the one to choose. We cover feeder selection in detail in [how to choose a servo feeder](https://servosteel.com.tr/en/academy/how-to-choose-a-servo-feeder). #### 4. Stacking: the most overlooked part of the line However fast the line is, if the sheets cannot be stacked properly production jams right there and two operators end up tied to the stacker. We explain how the unit that automates this works on the [automatic stacker](https://servosteel.com.tr/en/machines/automatic-stacker) page. What to check: - **Stack height and weight** — does it suit pallets your forklift can handle? - **Surface protection** — with scratch-prone material (stainless, pre-painted) you may need interleaving or PVC film. - **Edge alignment** — a poorly aligned stack costs time at the next machine. If you process painted and stainless sheet, a **PVC film applicator** can be integrated into the line, applying the protective film before the sheet is cut. #### 5. Decoiler capacity sets the ceiling of the line The capacity of a cut-to-length line is usually limited not by the cutting unit but by the **decoiler**. If the decoiler takes 5-tonne coils, then no matter how fast the rest of the line is, you stop and change coil every 5 tonnes. You can calculate coil weight from outer diameter, core diameter and width — the [coil calculator](https://servosteel.com.tr/en/calculators) does it instantly, and we explain the method in [how to calculate coil weight and length](https://servosteel.com.tr/en/academy/how-to-calculate-coil-weight-and-length). With heavy coils and frequent changes, a **hydraulic decoiler plus loading car** saves substantial operator time. To see which type suits you, check the [hydraulic vs mechanical decoiler comparison](https://servosteel.com.tr/en/comparison/hydraulic-vs-mechanical-decoiler). #### 6. Line components: be clear on what is included A standard cut-to-length line contains these units: | Unit | Function | |---|---| | Decoiler | Carries the coil and unwinds it under control | | Loading car | Aligns and seats the coil on the shaft | | Straightener / leveller | Removes coil set and shape defects | | Feeder | Sets sheet length in measured steps | | Shear | Cuts across the strip | | Stacking unit | Stacks the sheets squarely | | PVC applicator | Applies protective film (optional) | Keep this list beside you when comparing quotes. The price gap between two offers is often hidden not in quality but in **scope** — a loading car or a stacking unit may have been left out. On the control side, Servosteel lines are built on **Schneider Lexium and Altivar** drives; the line runs from a single panel and spare-part access benefits from a widely available brand. #### What to prepare before selecting Have these four ready when requesting a quote: 1. **Coil weight and width** — determines decoiler capacity 2. **Sheet thickness range and grade** — determines leveller and cutting unit 3. **Sheet length range and volume** — answers the shear-versus-flying-shear question 4. **Flatness tolerance (as a number)** — determines the leveller type #### Conclusion On a cut-to-length line the cutting unit drives the price, but the leveller drives **satisfaction**. If budget is tight, simplifying on the cutting side always hurts less than simplifying on the levelling side — there is no way to flatten a sheet after the fact. Review our [cut-to-length lines](https://servosteel.com.tr/en/cut-to-length-lines) page and [request a quote](https://servosteel.com.tr/en/request-quote) with the four items above. Frequently asked questions: Q: What is the difference between a cut-to-length line and a slitting line? A: The cutting direction. A slitting line cuts along the strip into narrower strips; a cut-to-length line cuts across it and produces flat sheets. Q: Should I choose a stop-and-cut shear or a flying shear? A: With short sheets in high volume, a flying shear keeps the line moving and pays for itself by removing stoppage time. With long sheets in low volume, a stop-and-cut shear is sufficient and economical, and it gives a clean cut edge. Q: Can a simple straightener remove edge wave? A: No. A simple straightener removes coil set. Edge wave and defects rooted in internal stress need a cassette-type precision leveller, which adjusts roller pressure zone by zone. Q: What limits the capacity of a cut-to-length line? A: Usually the decoiler rather than the cutting unit. If the decoiler takes 5-tonne coils, the line stops every 5 tonnes for a coil change; with heavy coils and frequent changes, a hydraulic decoiler plus loading car saves substantial operator time. ### Solar Profile Line: How to Calculate the Payback Source: https://servosteel.com.tr/en/academy/solar-profile-line-roi · Published 2026-07-30 · Updated 2026-09-17 Short answer: A solar profile line makes sense once you have a continuous, predictable project pipeline; the threshold most often quoted is a multi-year portfolio of around 500 MW, and it drops if you do contract manufacturing or a local content rule applies. Payback is total investment divided by annual gain minus annual operating cost, where annual gain is annual output in tonnes times value added per tonne. The steel structure that carries the panels in a solar plant — channel profiles, C and U sections, posts and purlins — has until recently been something most developers simply bought in. That equation has changed: **regional local content requirements** and growing project volumes have pushed EPC contractors and mounting structure makers to ask whether they should be forming the profile themselves. This article answers that question with arithmetic rather than enthusiasm. #### Why the question is being asked now Two things happened at once: **1. Demand grew.** Market research puts the Middle East solar mounting structure market in the billion-dollar range as of 2026, with expectations of several-fold growth over the coming decade. Saudi Arabia's national renewable energy programme targets 58.7 GW by 2030. **2. Local production became a requirement.** Local content rules in Saudi Arabia (Vision 2030) and the UAE are steering international suppliers towards establishing production in the region. That makes bidding with imported profile progressively harder — the profile is no longer only a cost line, it is **a condition of being able to bid at all.** #### The investment threshold: when does it make sense? The general view in the sector is that owning a line becomes meaningful once you have a **continuous and predictable project pipeline.** The threshold most often quoted is a multi-year portfolio in the region of **500 MW.** But that threshold is not absolute. It drops in two cases: - **If you will do contract manufacturing:** running the line not only for your own projects but also selling profile to other EPCs in the region raises capacity utilisation. - **If a local content rule applies:** then the calculation is no longer purely cost — it becomes **the price of being allowed to bid.** The cost of a lost tender can exceed the cost of the line. #### The skeleton of the payback calculation The decision reduces to four variables: ``` Annual gain = Annual output (tonnes) × Value added per tonne Payback (yr) = Total investment ÷ (Annual gain − Annual operating cost) ``` Each variable has to be filled in separately: ##### 1. Total investment Not just the price of the line: freight, customs, installation and commissioning, site preparation (floor, power, compressed air), the **roll set** and any spare roll sets. We explain how the process works and what actually drives the cost in [what roll forming is](https://servosteel.com.tr/en/academy/what-is-roll-forming). Roll forming lines are priced across a wide band depending on configuration; when you request a quote, pin down item by item what the scope includes. ##### 2. Annual output A single line's annual capacity varies with profile complexity, sheet thickness and shift pattern; the sector typically talks in terms of **a few thousand tonnes per year.** For your own calculation use: ``` Annual tonnes = Line speed (m/min) × Operating minutes × Utilisation × Weight per metre (kg/m) ÷ 1000 ``` **Keep the utilisation figure realistic.** What separates catalogue speed from actual output is changeover time and downtime. ##### 3. Value added per tonne The heart of the calculation. Broadly: ``` Value added = (Bought-in profile price) − (Coil cost + labour + energy + scrap) ``` What you gain is the difference between your supplier's margin and your own conversion cost. This figure varies significantly by region, steel price and profile type — **derive it from your own purchase invoices**, do not use a generic number. ##### 4. Annual operating cost Operators and maintenance staff, energy, consumables, roll maintenance and regrinding, spare parts, and items outside depreciation. #### Worked example: putting numbers in The values below are **illustrative** — use the same skeleton with your own figures. The point is not the result but seeing **which variable moves the result how much.** **Assumptions:** | Variable | Example value | |---|---| | Line speed | 15 m/min | | Weight per metre (C profile) | 4 kg/m | | Shifts | 2 × 8 hours, 250 days | | Utilisation | 60% | **Annual output:** ``` Operating minutes = 2 × 8 × 60 × 250 = 240,000 min Annual tonnes = 15 × 240,000 × 0.60 × 4 ÷ 1000 = 8,640 tonnes ``` Note the effect of utilisation: at 75% instead of 60% the output would be 10,800 tonnes — **the same line, the same shifts, 25% more output.** The only thing creating that gap is changeover time. It is not hard to see how a quick cassette-change arrangement pays for itself here. **Payback:** if your value added per tonne is X and annual operating cost is Y: ``` Payback = Total investment ÷ (8,640 × X − Y) ``` Rather than stopping at that number, run a **sensitivity check**: if value added drops 20%, how many years does payback become? At 45% utilisation, does it still make sense? A decision is sound when it survives the **bad** case, not the best one. #### What moves the numbers most? | Variable | Effect | |---|---| | **Number of profile types** | Many types = many changeovers = low utilisation. Fast changeover turns directly into money here. | | **Sheet thickness** | Thicker sheet means a slower line and higher roll wear. | | **Punching requirement** | An in-line punching station removes a secondary operation and raises value added. | | **Shift pattern** | The same investment amortises far faster on 2–3 shifts. | | **Roll life** | Roll material and hardness go straight into the annual maintenance line. | That last item looks minor but is not: if rolls are not properly hardened, dimensional drift and early replacement quietly wreck the calculation. Servosteel rolls are produced from **4140 alloy steel** and hardened to **58–60 HRC**. #### Two costs that get overlooked **Coil scrap rate.** The "coil cost" that enters the calculation is based on the tonnage you buy, not the tonnage you produce. If the master coil width does not divide cleanly into your profile blank width, the difference is lost on every coil. You can [calculate the scrap rate](https://servosteel.com.tr/en/calculators) with your own dimensions and see its scale once converted to annual tonnage. **Coil change downtime.** If your decoiler capacity is low the line stops more often, and that goes straight into the utilisation figure. You can work out how many hours one coil will run in the [calculator](https://servosteel.com.tr/en/calculators); the method is explained in [how to calculate coil weight and length](https://servosteel.com.tr/en/academy/how-to-calculate-coil-weight-and-length). A hydraulic decoiler with a loading car reduces this item directly — see the [hydraulic vs mechanical](https://servosteel.com.tr/en/comparison/hydraulic-vs-mechanical-decoiler) comparison. #### Checklist before deciding - [ ] Is the next 3 years' pipeline defined **in MW**? - [ ] Have you listed the profile sections and their expected tonnage split? - [ ] Is there a **local content requirement** in your market, and at what rate? - [ ] Have you evaluated filling capacity through contract manufacturing? - [ ] Is your coil supply secured (price and continuity)? - [ ] Are operator and maintenance staff planned? - [ ] Does the quotation include the roll set, commissioning and training? - [ ] Does the calculation still hold if value added falls 20%? #### Where to start Getting the calculation right depends on sizing the line correctly. Three inputs are enough for that: **the profile drawing, the sheet thickness and the target annual tonnage.** You can review the line's components on our [solar mounting profile line](https://servosteel.com.tr/en/roll-forming-lines/solar-panel-profile) page; we can also clarify together the first link of the line — the [decoiler](https://servosteel.com.tr/en/machines/decoilers) — and the roll set that defines the profile. For a capacity and layout study specific to your project, [request a quote](https://servosteel.com.tr/en/request-quote) and send your profile drawing with it. --- *Note: the market sizes and threshold figures in this article are general references based on publicly available industry sources; the speed, weight and utilisation values in the worked example are illustrative. Any investment decision should be verified against your own cost and supply data.* Frequently asked questions: Q: How is the annual output of a solar profile line calculated? A: Annual tonnes = line speed × operating minutes × utilisation × weight per metre ÷ 1000. In the article's example, 15 m/min, a 4 kg/m profile, 2 × 8-hour shifts over 250 days and 60% utilisation give 8,640 tonnes a year. Q: How much does utilisation change the result? A: At 75% instead of 60% utilisation, the same line and shifts produce 10,800 tonnes instead of 8,640 — 25% more output. Changeover time creates that gap, which is where a quick cassette-change arrangement pays for itself. Q: How do I work out value added per tonne? A: Take the bought-in profile price and subtract coil cost, labour, energy and scrap. The figure varies significantly by region, steel price and profile type, so derive it from your own purchase invoices rather than using a generic number. Q: What are Servosteel's forming rolls made of? A: They are produced from 4140 alloy steel and hardened to 58–60 HRC. Rolls that are not properly hardened cause dimensional drift and early replacement, which quietly wrecks the payback calculation. ### How to Choose the Right Servo Feeder for a Progressive Die Source: https://servosteel.com.tr/en/academy/servo-feeder-selection-for-progressive-dies · Published 2026-07-30 · Updated 2026-09-17 Short answer: Three things decide the servo feeder for a progressive die: systematic pitch error must stay below pilot pin clearance, the feeder's peak speed must fit inside the press window, and pilot release must be adjustable. To size it correctly, provide the part drawing, die pitch, number of stations and press strokes per minute. In a progressive die the part is not finished at one station: the strip advances one station with every press stroke and is punched, cut and formed in sequence. That is why what determines a die's performance is often not the die itself but **the feeder that advances the strip.** If the pitch drifts by a few hundredths of a millimetre, the punch moves off centre, burr appears and, in the worst case, the die is damaged. The 6 criteria below summarise what to settle when choosing a feeder for your progressive die. General servo feeder selection is covered in [a separate guide](https://servosteel.com.tr/en/academy/how-to-choose-a-servo-feeder); here we focus on what is specific to progressive dies. #### 1. Pitch accuracy — the most critical figure In a progressive die accumulated error is unforgiving: a small deviation repeated at every station becomes a total shift by the last one. This is why the first value to look at is **feeding accuracy.** A single accuracy figure in a catalogue means little on its own — you should ask **at what thickness and width it was measured**; the same feeder may not hold on 4 mm what it shows on 0.5 mm. At Servosteel the feeder accuracy figure is documented for [compact lines](https://servosteel.com.tr/en/machines/compact-lines); for a standalone feeder we set the target accuracy together with you, from your die's tolerance budget and station count. Two kinds of error must be separated here, because their consequences differ entirely: **Random error.** It deviates plus and minus on each stroke and averages to zero. Holes on the strip shift slightly forward and back; statistically it does not accumulate, but individual parts can still fall out of tolerance. **Systematic error.** It deviates in the same direction on every stroke — for example, if roller pressure is insufficient the strip falls 0.05 mm short at every step. Across a ten-station die that means a total shift of 0.5 mm, which reaches the point of **jamming the die**. The second is the dangerous one, and its source is usually not the feeder but its setup: low pressure, worn roller surface or oily strip. Pilot pins absorb part of this drift, but **there is a limit to what pins can absorb** — once systematic error exceeds pilot clearance, a pin breaks. #### 2. Pitch length and number of stations The die's station pitch is the distance the feeder must advance on every stroke. A long pitch combined with a high stroke rate demands higher speed and harder acceleration from the feeder. The trap here is looking at average speed. A 60 mm pitch at 60 strokes/min averages only 3.6 m/min — which sounds very slow. But the feeder must deliver those 60 mm inside the window when the press is open, and that window is a small fraction of a second. The **instantaneous peak speed** required is many times the average. Give these three together at quotation stage: **pitch length, number of stations and press strokes per minute.** The feeder is sized from that trio. #### 3. Sheet thickness and width Thick material needs higher holding force, wide material needs longer rollers. Servosteel servo feeders work with **0.4 – 4.0 mm** thickness and widths **up to 1,600 mm**; the feed rollers are 2 × Ø85 mm. Free feeding speed is **35 m/min** — whether that suits your press rate has to be calculated. In a progressive die, width selection also depends on **strip layout**. The part drawing matters, but so does how the parts are arranged on the strip: a nested layout cuts scrap significantly, yet demands wider strip and a more complex die. This decision must come before feeder selection, because strip width determines the feeder frame. #### 4. Press synchronization and pilot pins The feeder cannot work independently of the press. It must run in **full synchronization** with the press cam signal, and release its grip the moment the die's pilot pins catch the strip (pilot release). Without this function the pilot pins fight the strip and hole positions drift. The timing works like this: the feeder delivers the pitch and stops; the press starts to descend; the pilot pins enter the guide holes and pull the strip into its exact position in the last tenth of a millimetre; **at precisely that moment** the feeder opens its grip. Release too early and the strip is free to move; too late and pin and feeder work against each other. That is why pilot release is not merely a "yes/no" question — it must be **adjustable**. Different dies have the pins entering at different press angles. On Servosteel feeders, pilot pin release is standard. #### 5. Do not overlook the need for levelling Coil set — the curvature memory in strip coming off a coil — causes direct problems in a progressive die: if the strip does not enter the die flat, station alignment is lost. If your requirements are tight, consider the feeder together with a straightener. Levelling matters more in a progressive die than in single-station work. The reason: the strip is supported over a long distance inside the die and must hold its position at every station. Curved strip lifts inside the die, rubs against the stripper and wanders out of alignment as it advances. A curvature that would go unnoticed on a single-station job causes part rejection in a ten-station die. Rather than buying a separate machine, a [straightener servo feeder](https://servosteel.com.tr/en/machines/straightener-servo-feeders) can be chosen — straightening and feeding in one frame, configured to sheet thickness with 7/9/11/13 roller options. #### 6. Recipe memory — the reality of multi-die shops A shop rarely runs a single die. Re-entering pitch, speed and ramp values at every die change is both a waste of time and a source of error. Servosteel feeders store **250 recipes**; at a die change the operator recalls the recipe and no setup is repeated. The real gain is not time but **repeatability**. Set by hand, the same die can be entered with two different values on two different shifts; part dimensions then vary by shift and the cause goes unfound for months. A recipe removes that variable entirely — the die runs with identical values every time it is called up. #### Reference values | Feature | Value | |---|---| | Material thickness | 0.4 – 4.0 mm | | Sheet width | ≤ 1,600 mm | | Free feeding speed | 35 m/min | | Feed rollers | 2 × Ø85 mm | | Die memory | 250 recipes | You can work out your coil weight and how many hours one coil will run from the [calculators](https://servosteel.com.tr/en/calculators) page; we explain the method in [how to calculate coil weight and length](https://servosteel.com.tr/en/academy/how-to-calculate-coil-weight-and-length). #### Why buying die and feeder from the same source matters A progressive die and its feeder are two interdependent parts: pitch tolerance, pilot release timing and strip layout only come together when they are designed together. Bought from different suppliers, the boundary of responsibility blurs — the die maker points at the feeder, the feeder maker points at the die. The most common dispute in practice runs like this: part tolerance is out. The die maker says "the feeder is losing pitch", the feeder manufacturer says "the die's pilot clearance is too large". Both show their own measurement, and both are right within their own frame. The only resolution is putting both parties at the same table — or buying from the same team in the first place. Servosteel manufactures the [servo feeder](https://servosteel.com.tr/en/machines/servo-feeders) in its own facility and sizes it to your die's feeding requirement. #### Conclusion Three things decide feeder selection for a progressive die: **keeping systematic error below pilot pin clearance**, **peak speed covering the press window**, and **pilot release being adjustable**. Prepare your part drawing, die pitch and press stroke rate — the right feeder is sized from those three. [Request a quote](https://servosteel.com.tr/en/request-quote) for your project and we will come back based on your sheet thickness and strip dimensions. Frequently asked questions: Q: Which feeding error is most dangerous in a progressive die? A: Systematic error, which repeats in the same direction on every stroke. If the strip falls 0.05 mm short at every step, a ten-station die accumulates a 0.5 mm shift; once that exceeds pilot clearance, a pin breaks. Q: Is a 60 mm pitch at 60 strokes per minute a slow feed? A: The average is only 3.6 m/min, but the feeder has to deliver each pitch in the fraction of a second when the press is open. Selection is based on that instantaneous peak speed, which is many times the average. Q: Why must pilot release be adjustable? A: The feeder must open its grip at the moment the pilot pins pull the strip into position. Released too early, the strip can move; too late, pin and feeder work against each other. Pins enter at different press angles on different dies. Q: What range do Servosteel servo feeders cover? A: 0.4–4.0 mm thickness and widths up to 1,600 mm, with 35 m/min free feeding speed and 2 × Ø85 mm feed rollers. The feeder stores 250 recipes, and pilot pin release is standard. ### How to Choose a Coil Slitting Line: 7 Critical Criteria Source: https://servosteel.com.tr/en/academy/how-to-choose-a-slitting-line · Published 2026-07-29 · Updated 2026-09-17 Short answer: To choose a coil slitting line, first fix maximum coil weight, thickness range and target strip widths, then assess the knife unit, levelling, recoiler tension, automation and the manufacturer's service scope. The practical rule is to take one capacity tier above your heaviest coil, because frames and mandrels cannot be reinforced later. Light series run at 1,500–4,000 kg, heavy series at 6,000–15,000 kg. A coil slitting line is an investment that splits a wide steel coil into strips of the required width — and if it is not sized correctly, one of two things happens: either capacity runs out and the line becomes a bottleneck in its first year, or you tie up money in a machine far beyond your needs. Both are expensive, but the first is worse: an undersized line usually cannot be scaled up, because the frame is built for that load from the start. The 7 criteria below walk through the parameters you should settle before requesting a quote. #### 1. Coil capacity and weight The heart of the line is the **maximum coil weight** you will process. Light series run in the 1,500–4,000 kg range, heavy series in the 6,000–15,000 kg range. The most common mistake here is choosing capacity from today's order rather than from the coil your supplier actually delivers. Coil weight is the result of three things: outer diameter, core diameter and width. The same 1,250 mm wide coil weighs about 13 tonnes at a 1,400 mm outer diameter and about 9 tonnes at 1,200 mm. In other words, "a 1,250 coil" does not define capacity on its own. You can work out the weight of your own coils with the [coil calculator](https://servosteel.com.tr/en/calculators) and see which tier you fall into. We explain the formula step by step in [how to calculate coil weight and length](https://servosteel.com.tr/en/academy/how-to-calculate-coil-weight-and-length). A practical rule: take **one tier above your heaviest coil**. Six tonnes for a 5-tonne coil, ten for an 8-tonne coil. Frames and mandrels cannot be reinforced later, whereas running below capacity is always possible. #### 2. Sheet thickness and width Slitting force depends directly on sheet thickness and on the yield strength of the material. Thin sheet at 0.5–1 mm and thick sheet at 1.0–5 mm require entirely different knife sets and frame rigidity — the difference is not simply "a bigger motor". With thick material, arbor deflection comes into play: as knives are stacked along the arbor, the cutting force tries to bend it. The more it deflects, the more strip width drifts from centre to edge. This is why heavy-gauge lines use larger arbor diameters and add intermediate supports. If a quotation says "cuts up to 5 mm", ask **at what width and how many strips** that holds. Stainless and high-strength steel demand noticeably more force than mild steel of the same thickness. Sharing your material list up front avoids the later surprise of "this line does not cut that". #### 3. The slitting (knife) unit This is the part that determines strip quality, and it is managed through two settings. **Knife clearance** is the lateral gap between the upper and lower knife, set as a percentage of sheet thickness. General practice uses low clearance for thin, soft material and higher clearance for thick, hard material. Too little clearance shortens knife life and crushes the edge; too much produces burr and a torn edge. That is why **precise and repeatable** clearance adjustment is the single most critical feature of the line. **Penetration** is how far the knives overlap, and it governs how clean the cut line is. If you change widths often, a quick knife-change system saves serious time. Building the knife set in a cassette outside the line rather than on it cuts changeover from hours to minutes — in plants that change width more than once a day, that alone justifies the investment. #### 4. Do you need levelling? Coil set — the curvature memory in the coil — causes flatness problems in the finished product. Slitting itself also releases internal stresses: narrow strips cut from a wide coil can curve slightly or show edge wave after separation. If your customers demand tight flatness, a **levelling unit** is added to the line. Planning it from the beginning is both cheaper and faster than retrofitting: the leveller sits inside the line, and adding it later means rearranging the layout and the drives. If your strips will feed a [roll forming](https://servosteel.com.tr/en/roll-forming-lines) or tube line — the process is explained in [what roll forming is](https://servosteel.com.tr/en/academy/what-is-roll-forming) — levelling is close to mandatory — curved strip wanders off centre in the forming line. #### 5. Recoiler and tension When the slit strips are rewound, **tension control** becomes critical. Loose winding causes telescoping during transport and in the next operation — the coil slides sideways and the edges are damaged. The second issue is **length difference**: because of thickness tolerance, strips cut from a wide coil come out slightly different in length. Without separator discs and individual tension control, the short strip pulls tight while the long one stays slack. This is why the tension system must be sized **to your number of strips**. Recoiler capacity must also match the decoiler: unwinding a 10-tonne coil onto a 6-tonne recoiler stops the line halfway through. #### 6. Automation and control Single-operator running, speed control and recipe memory determine efficiency. In a plant that changes widths often, storing settings as recipes saves minutes per changeover and reduces dependence on a specific operator. On Servosteel lines the control architecture is built on **Schneider Lexium and Altivar** drives, and the whole line is managed from a single panel. Choosing a widely available brand also simplifies spare parts and field service — a custom control board can mean weeks of waiting when a fault occurs. #### Scrap calculation: the overlooked cost This is rarely discussed during line selection, yet it is the most visible item in annual cost. When the master coil width is not exactly divisible by the strip width, the remainder becomes scrap. Example: cutting 120 mm strips from a 1,250 mm coil with 10 mm edge trim leaves 1,240 mm usable, which fits 10 strips (1,200 mm) and leaves 40 mm over. With the trim, scrap is 50 mm — that is **4%**. Had you been able to run 124 mm strips, you would still get 10 strips from the same coil but with less waste. Use the [slitting yield calculator](https://servosteel.com.tr/en/calculators) with your own dimensions. Viewed in annual tonnage, a 2% difference in scrap comes to 200 tonnes a year on a line slitting 10,000 tonnes: steel bought at coil price and sold at scrap price. #### Capacity tiers (reference) | Series | Coil capacity | Sheet thickness | |---|---|---| | Light | 1,500 – 4,000 kg | 0.5 – 2 mm | | Heavy | 6,000 – 15,000 kg | 0.8 – 5 mm | #### 7. Manufacturer and service The most critical and most often skipped item. Having the line come from **a single manufacturer** — decoiler through recoiler — eliminates integration problems from the start. On lines assembled from different suppliers, everybody points at everybody else when something goes wrong. What to settle in the contract: - **Factory acceptance test (FAT)** — will the line be tested with your own material before shipment? - **Commissioning** — how many days on site, by whom, covering what? - **Spare parts** — are critical parts in stock, and what is the lead time? - **Remote support** — can the control system be accessed remotely? #### Conclusion The right line is the one that meets tomorrow's volume, not today's order. Three numbers should be in your hand before deciding: **maximum coil weight**, **thickness range** and **target strip widths**. With those ready you can review our [coil slitting lines](https://servosteel.com.tr/en/coil-slitting-lines) page, and we can settle the first link in the chain — [decoiler](https://servosteel.com.tr/en/machines/decoilers) selection — together. If you are unsure between slitting and cut-to-length, see the [comparison](https://servosteel.com.tr/en/comparison/slitting-vs-cut-to-length). For project-specific sizing, [request a quote](https://servosteel.com.tr/en/request-quote) with your sheet thickness, coil weight and target strip dimensions. Frequently asked questions: Q: How should I size coil capacity for a slitting line? A: Take one tier above your heaviest coil: six tonnes for a 5-tonne coil, ten for an 8-tonne coil. The same 1,250 mm wide coil weighs about 13 tonnes at a 1,400 mm outer diameter and about 9 tonnes at 1,200 mm, so width alone does not define capacity. Q: What happens if knife clearance is set wrong? A: Too little clearance shortens knife life and crushes the edge; too much produces burr and a torn edge. Precise, repeatable clearance adjustment matched to sheet thickness is the most critical feature of the line. Q: Does a slitting line need a levelling unit? A: If your customers demand tight flatness, yes; if the strips feed a roll forming or tube line it is close to mandatory, because curved strip wanders off centre. Planning it from the start is cheaper and faster than retrofitting. Q: How is slitting scrap calculated? A: Subtract edge trim from coil width, find how many strips fit and add the remainder to scrap. Cutting 120 mm strips from a 1,250 mm coil with 10 mm trim gives 10 strips, 40 mm left over and 50 mm total scrap, which is 4%. ## Languages The same pages are published in 9 languages. Turkish lives at the site root and uses Turkish URL slugs (e.g. https://servosteel.com.tr/dilme-hatlari). The other eight — English (/en), German (/de), Spanish (/es), Italian (/it), Hungarian (/hu), Polish (/pl), Russian (/ru) and Arabic (/ar, right-to-left) — share the same English slugs, so replacing /en/ with any of those locale codes gives the same page in that language. Priority export markets: European Union, MENA (Arabic) and CIS / Central Asia (Russian).