{"id":472,"date":"2018-03-16T17:51:51","date_gmt":"2018-03-16T09:51:51","guid":{"rendered":"https:\/\/believeindustry.company\/?page_id=472"},"modified":"2026-11-10T10:27:26","modified_gmt":"2026-11-10T02:27:26","slug":"%d8%ae%d8%b7-%d8%aa%d9%82%d8%b7%d9%8a%d8%b9-%d8%ae%d9%81%d9%8a%d9%81","status":"publish","type":"page","link":"https:\/\/believeindustry.company\/ar\/coil-process-equipment\/slitting-line\/light-gauge-slitting-line\/","title":{"rendered":"\u062e\u0637 \u0627\u0644\u062a\u0642\u0637\u064a\u0639 \u0627\u0644\u0637\u0648\u0644\u064a \u0644\u0644\u0645\u0642\u0627\u0633 \u0627\u0644\u062e\u0641\u064a\u0641"},"content":{"rendered":"

Short answer:<\/strong> a light gauge slitting line cuts wide steel coil into narrow strips between 0.2 mm and 4.0 mm thick, rewinds them under controlled tension, and holds slit width to roughly \u00b10.1 mm at line speeds up to 180 m\/min. Roofing plants, light steel frame factories, tube mills and cable tray producers use it to turn master coil into the exact strip widths their roll formers and welding lines consume.<\/p>\n

A light gauge slitting line is not a scaled-down heavy line. The mechanics change once the strip drops below 1 mm: thin strip has almost no stiffness of its own, so tension, knife clearance and recoiler alignment decide quality long before motor power does. Every light gauge slitting line we build is therefore specified around control, not tonnage.<\/p>\n

\"slit
Slit strips leave the slitter head at final width. Knife spacing and shims set the whole pattern in one pass.<\/figcaption><\/figure>\n

What a light gauge slitting line actually does<\/h2>\n

The line does five jobs in one pass: uncoil, flatten, slit, tension, rewind. A coil car loads the master coil onto a hydraulic mandrel. A peeler opens the coil head and feeds a pinch roll and five-roll leveler that removes coil set and crossbow. The strip then passes a side guide, a pair of arbors carrying circular knives, and a loop pit that separates slitting speed from recoiling speed. A tension station clamps the strips and the recoiler rewinds them into baby coils.<\/p>\n

Each station matters more on thin material. A 0.4 mm strip carries tension across its width with almost no beam strength, so a 0.2 mm guide error is enough to produce a wavy edge that will not track through a roll former. A leveler that is adequate on 3 mm leaves visible crossbow on 0.5 mm. The question is never how much the line can pull, but how precisely each station holds its position.<\/p>\n

Where light gauge ends and medium gauge begins<\/h2>\n

The industry splits coil slitting into three bands: light gauge 0.2 mm to 4.0 mm, medium gauge 2 mm to 8 mm, heavy gauge 8 mm to 20 mm. The 2 mm to 4 mm zone is shared, and that overlap causes more specification mistakes than anything else in the category.<\/p>\n\n\n\n\n\n\n\n\n
Item<\/th>\nLight gauge<\/th>\nMedium gauge<\/th>\nHeavy gauge<\/th>\n<\/tr>\n
Thickness<\/td>\n0.2\u20134.0 mm<\/td>\n2\u20138 mm<\/td>\n8\u201320 mm<\/td>\n<\/tr>\n
Coil width<\/td>\nup to 2000 mm<\/td>\nup to 2600 mm<\/td>\nup to 2600 mm<\/td>\n<\/tr>\n
Line speed<\/td>\n120\u2013180 m\/min<\/td>\n60\u2013100 m\/min<\/td>\n20\u201360 m\/min<\/td>\n<\/tr>\n
Width tolerance<\/td>\n\u00b10.05 to \u00b10.15 mm<\/td>\n\u00b10.2 mm<\/td>\n\u00b10.5 mm<\/td>\n<\/tr>\n
Strips per pass<\/td>\nup to 30<\/td>\n6\u201320<\/td>\n3\u201310<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

A light gauge slitting line built for 0.5 mm to 4 mm slits 2 mm strip well. A line built for 2 mm to 8 mm cannot hold \u00b10.1 mm on 0.5 mm strip, because its arbor, knife overhang and tension resolution are sized for a heavier web. If your mix sits mostly below 2 mm with occasional 3 mm work, buy light gauge and specify the top of the range honestly.<\/p>\n

Standard light gauge slitting line models<\/h2>\n

BELI builds the range in five frame sizes. Width and coil weight set the price, and thickness follows from arbor diameter. Every model is also built to a customer width on request.<\/p>\n\n\n\n\n\n\n\n\n
Model<\/th>\nThickness<\/th>\nCoil width<\/th>\nSlits<\/th>\nSpeed<\/th>\nCoil weight<\/th>\n<\/tr>\n
BELI-1\u00d71000<\/td>\n0.3\u20132.0 mm<\/td>\n150\u20131000 mm<\/td>\n10\u201330<\/td>\n0\u2013120 m\/min<\/td>\n5\u201310 t<\/td>\n<\/tr>\n
BELI-2\u00d71300<\/td>\n0.3\u20132.0 mm<\/td>\n500\u20131300 mm<\/td>\n10\u201330<\/td>\n0\u2013120 m\/min<\/td>\n10\u201315 t<\/td>\n<\/tr>\n
BELI-2\u00d71600<\/td>\n0.3\u20132.0 mm<\/td>\n600\u20131600 mm<\/td>\n10\u201330<\/td>\n0\u2013120 m\/min<\/td>\n15\u201320 t<\/td>\n<\/tr>\n
BELI-3\u00d71600<\/td>\n0.4\u20133.0 mm<\/td>\n600\u20131600 mm<\/td>\n8\u201330<\/td>\n0\u2013120 m\/min<\/td>\n15\u201320 t<\/td>\n<\/tr>\n
BELI-4\u00d72000<\/td>\n0.5\u20134.0 mm<\/td>\n600\u20132000 mm<\/td>\n6\u201325<\/td>\n0\u2013100 m\/min<\/td>\n15\u201325 t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Two numbers deserve a second read. Slitting count is limited by minimum strip width and arbor length, not by how many knives you own. Coil weight drives mandrel size, coil car capacity and foundation loading, and it is the item most often under-specified by first-time buyers who later want to run 20 t coils on a 10 t frame.<\/p>\n

Configuration from coil car to recoiler<\/h2>\n

A complete light gauge slitting line has fourteen stations. The thin-gauge detail in the right column is what separates a line that holds tolerance from one that fights it all day.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Station<\/th>\nFunction<\/th>\nThin-gauge detail<\/th>\n<\/tr>\n
Coil car<\/td>\nLifts coil to mandrel height<\/td>\nV-saddle, \u00b12 mm centring<\/td>\n<\/tr>\n
Hydraulic uncoiler<\/td>\nHolds and brakes the coil<\/td>\nDrag brake tuned for low back tension<\/td>\n<\/tr>\n
Peeler<\/td>\nOpens coil head, presses wrap<\/td>\nNon-marking polyurethane roll<\/td>\n<\/tr>\n
Pinch roll and leveler<\/td>\nFeeds strip, removes coil set<\/td>\nFive-roll, small work roll diameter<\/td>\n<\/tr>\n
Entry shear<\/td>\nCuts a square coil head<\/td>\nKeeps knives out of a cracked edge<\/td>\n<\/tr>\n
Side guide<\/td>\nCentres strip before slitting<\/td>\nRoller guide, 0.1 mm repeatability<\/td>\n<\/tr>\n
Slitter head<\/td>\nCuts strip into widths<\/td>\nShimmed knives, low overhang<\/td>\n<\/tr>\n
Scrap winder<\/td>\nWinds edge trim<\/td>\nTwin winders, tension follows line speed<\/td>\n<\/tr>\n
Loop pit<\/td>\nDecouples slitter and recoiler<\/td>\nUltrasonic sensing, no strip contact<\/td>\n<\/tr>\n
Pre-divider<\/td>\nSeparates strips before tension<\/td>\nStops strips crossing at the recoiler<\/td>\n<\/tr>\n
Tension station<\/td>\nCreates coiling tension<\/td>\nFelt or belt bridle, taper tension<\/td>\n<\/tr>\n
Recoiler<\/td>\nRewinds baby coils<\/td>\nOverarm separator, hydraulic mandrel<\/td>\n<\/tr>\n
Coil car out<\/td>\nRemoves finished coils<\/td>\nNo banding damage to coil face<\/td>\n<\/tr>\n
Hydraulic and electric<\/td>\nPower, PLC, safety circuit<\/td>\nRecipe memory per strip pattern<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\"edge
Edge trim is wound into a compact scrap coil as it leaves the slitter, so the loop pit stays clear.<\/figcaption><\/figure>\n

Knife clearance, overlap and burr<\/h2>\n

Knife clearance is the single setting that decides edge quality on a light gauge slitting line. It is measured across the gap between upper and lower knife edges and expressed as a percentage of strip thickness. Under 0.5 mm, use 3% to 8%. From 0.5 mm to 1.0 mm, 7% to 10%. Above 1.0 mm, 8% to 12% for mild steel, with stainless and high-strength grades at the top of the band.<\/p>\n

Put numbers on it. A 0.5 mm cold rolled strip needs a side gap of 0.035 mm to 0.05 mm. A 0.3 mm galvanized strip needs 0.01 mm to 0.024 mm. Those values cannot be set by eye, so the head must use precision shims and a feeler or optical gauge, and the setting must be recorded per pattern. Vertical knife overlap is a separate value, normally 0.1 mm to 0.3 mm; too much overlap thins the strip at the cut line.<\/p>\n

Burr height is the acceptance number that matters downstream. For strip under 1.0 mm keep burr at or below 0.05 mm. A 0.1 mm burr will score forming rolls and show through prepainted finishes. When burr creeps up, check clearance first, knife sharpness second, arbor runout third. Do not chase burr with tension.<\/p>\n

Tension control and surface protection<\/h2>\n

On thin strip, tension is the difference between a saleable coil and scrap. On a light gauge slitting line, coiling tension is normally 1% to 3% of yield strength, applied through a felt or belt bridle rather than a pinch roll, because a pinch roll marks coated surfaces. Taper tension then reduces the pull as the coil builds, which stops inner wraps from being crushed into a telescope.<\/p>\n

Surface protection is a specification item, not an accessory. Prepainted, stainless and polished strip need a line where no roller slides against the strip face, where the loop pit carries the strip without contact, and where the recoiler uses separator discs matched to the strip pattern. Ask for roller covering, bridle type and separator arrangement in writing. Cheap light gauge slitting lines are cheap in exactly those three places.<\/p>\n

\"recoiler
The recoiler builds the finished coil under taper tension, with the overarm holding strips flat as the coil grows.<\/figcaption><\/figure>\n

Tolerances to write into the contract<\/h2>\n

Tolerances on a light gauge slitting line are measured, not promised. Put the numbers in the purchase order and agree how each one will be checked on site.<\/p>\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nTypical value<\/th>\nHow it is checked<\/th>\n<\/tr>\n
Slit width<\/td>\n\u00b10.10 mm, \u00b10.05 mm on request<\/td>\nMicrometer, three points per strip<\/td>\n<\/tr>\n
Camber<\/td>\n\u22640.5 mm\/m over 300 mm wide<\/td>\nStraight edge over 2 m<\/td>\n<\/tr>\n
Burr height<\/td>\n\u22640.05 mm<\/td>\nOptical or profile gauge<\/td>\n<\/tr>\n
Telescoping<\/td>\n\u2264\u00b10.5 mm per side<\/td>\nTape on finished coil<\/td>\n<\/tr>\n
Edge wave<\/td>\n\u22641 mm over 1 m<\/td>\nFlat plate and feeler gauge<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

How many tons a shift can produce<\/h2>\n

Output on a light gauge slitting line is set by coil handling time, not cutting speed. Take a 15 t coil of 0.5 mm \u00d7 1250 mm strip slit into five strips at 120 m\/min. Cutting the coil takes about 25 minutes. Loading, threading and unloading take 10 to 12 minutes with a coil car and quick thread-up. That is about 45 minutes per coil, or 10 coils in an eight hour shift.<\/p>\n

The practical figure for that size is 140 t to 160 t per shift on repeat patterns, dropping toward 100 t when the pattern changes every coil. On a light gauge slitting line, pattern changes are why CNC knife positioning and a second head pay back fast: a manual head needs 30 to 60 minutes to re-shim, a cartridge head swaps in under 10. If your order book is full of small lots, buy the quick-change head before you buy extra speed.<\/p>\n

Options worth paying for<\/h2>\n

Four options change the economics of a light gauge slitting line more than the rest. Quick-change or double slitter heads cut changeover to minutes. CNC knife positioning removes setting errors and stores recipes by customer. A scrap chopper replaces edge winders where trim volume is high and floor space is tight. Inline deburring protects downstream tooling on exposed or coated product.<\/p>\n

Three more suit export markets. A camera and remote diagnostics link shortens service response. A width gauge at the recoiler gives traceable data per coil. A turnstile keeps the recoiler working while finished coils are banded.<\/p>\n

How to specify your light gauge slitting line<\/h2>\n

Six data points are enough to quote: material grade and tensile strength, thickness range with the most-used gauge, mother coil width, coil inner and outer diameter, maximum coil weight, and the strip pattern with minimum strip width and strips per pass. Add power supply, air supply and a floor drawing if you have one.<\/p>\n

Be honest about the range. A light gauge slitting line specified for 0.2 mm to 6 mm does neither end well, because arbors, knife overhang, tension and drive sizing point in different directions at the extremes. Two narrow lines usually outproduce one wide compromise, and the second line can be added once the first is earning.<\/p>\n

Delivery, installation and support<\/h2>\n

BELI has built coil processing equipment since 2005, with 500+ machines in 50+ countries and 80+ engineers and technicians on the team. Light gauge slitting lines are manufactured under ISO 9001 and supplied with CE documentation for European destinations. Layout drawings follow within two weeks of order, manufacturing takes about 120 days after deposit, and installation and commissioning run two to three weeks on site, including operator training and an acceptance run on your own coil.<\/p>\n

If your downstream process is a roll former, compare the width tolerance on this page with what your forming stations actually need. Our coil process equipment<\/a> range covers the decoilers and cut-to-length lines that sit beside a slitting line, and the coil slitting guide<\/a> explains how strip width affects forming. For heavier work see the medium gauge slitting line<\/a> and the heavy gauge slitting line<\/a>. Low-volume buyers should start with the simple slitting line<\/a>, and electrical steel producers with the silicon steel slitting line<\/a>. The full range sits under our slitting line<\/a> hub. Dimensional tolerances for cold rolled narrow strip are defined in EN 10140, global coil supply data is published by worldsteel<\/a>, and light steel framing demand is tracked by the Metal Construction Association<\/a>.<\/p>\n

Frequently asked questions<\/h2>\n

Eight questions come up on every light gauge slitting line enquiry.<\/p>\n

Q: What thickness can a light gauge slitting line handle?<\/strong>
\nA: A light gauge slitting line handles 0.2 mm to 4.0 mm as standard. Below 0.2 mm the strip behaves like foil and needs a thin strip or silicon steel line with different tension and knife settings. Above 4 mm the arbor and knife loading push you into medium gauge equipment.<\/p>\n

Q: How fast does it run?<\/strong>
\nA: 0 to 120 m\/min on standard models, 180 m\/min with a high-speed recoiler and matching loop control. Real speed falls as thickness rises: about 180 m\/min at 0.5 mm, 120 m\/min at 1.5 mm, 90 m\/min at 3 mm.<\/p>\n

Q: What width tolerance is realistic?<\/strong>
\nA: Expect \u00b10.1 mm on 0.5 mm to 2 mm cold rolled strip, \u00b10.05 mm on a precision build, \u00b10.15 mm on galvanized or prepainted material where coating varies. Camber should stay within 0.5 mm per metre above 300 mm width.<\/p>\n

Q: How many strips can it slit in one pass?<\/strong>
\nA: Up to 30 strips at 0.3 mm to 1 mm, about 20 at 1 mm to 2 mm, and 6 to 10 above 2 mm. The real limits are minimum strip width, usually 15 mm to 20 mm, and usable arbor length.<\/p>\n

Q: Can one line cover 0.2 mm and 6 mm?<\/strong>
\nA: No. A line set for 6 mm will cut 0.2 mm strip, but edge quality, burr and width tolerance at 0.2 mm will not match a line built for thin work. Size the light gauge slitting line to the gauge you run most.<\/p>\n

Q: What coil sizes does it accept?<\/strong>
\nA: A light gauge slitting line takes coil with 508 mm or 610 mm inner diameter, 2000 mm maximum outer diameter, coil weight 5 t to 25 t depending on model, coil width 150 mm to 2000 mm across the range.<\/p>\n

Q: How long is delivery and installation?<\/strong>
\nA: Layout drawings within two weeks of order, about 120 days manufacturing after deposit, two to three weeks on site for installation, commissioning and training. Sea freight depends on destination port.<\/p>\n

Q: What do you need from me to quote?<\/strong>
\nA: Material grade and tensile strength, thickness range with the most-used gauge, mother coil width, coil ID and OD, maximum coil weight, and the strip pattern with minimum width and strips per pass. Power supply and a floor plan speed things up.<\/p>\n

Last updated: 2026-11-09<\/p>\n

Article Changelog<\/p>\n

2026-11-09: Full rewrite. Removed the duplicated H1, corrected the coil weight range (old text read 55-25 Ton), rebuilt the model table to 0.2-4.0 mm, added the gauge comparison, the 14-station configuration table, knife clearance and burr limits, tension and surface protection, contract tolerances, output math, options, a specification checklist and 8 FAQs.<\/p>\n

Next Review Triggers<\/p>\n

New model added to the light gauge range, or a standard width and weight combination changes.<\/p>\n

Customer acceptance data shows burr or camber limits need tightening.<\/p>\n

EN 10140 or CE machinery documentation requirements are revised.<\/p>\n