U Type Groove Production Line

Product Overview

The U type groove production line takes flat steel strip off a coil and delivers a finished U-section channel — the strut profile that seismic bracing, trapeze hangers and the frame of a comprehensive support hanger production line are built around. Punching, teeth punching, roll forming and cutting to length run as one continuous cycle, so the part leaving the back of the line is ready to assemble rather than waiting for a second operation.

That matters most on repetition work, which is what seismic support channel forming for building MEP projects largely consists of. A project needs channel at a fixed hole pitch and a fixed length, hundreds of pieces of it, and every extra handling step is a chance for one piece to come out different from the next. Keeping the whole sequence in line ties the hole pattern and the cut length to the same control settings from the first piece to the last.

The line is built in three section sizes, from the narrower profile used for lighter bracket work up to the deep section used in heavier support frames. Most shops run one section as their main product and change tooling for the others, so the practical question when you specify the line is not only which sections you sell today but which ones you expect to be selling in two or three years.

We supply this U channel roll forming production line as a complete system — uncoiler, leveling, servo feed, punch press, forming stations, rear cut-off and CNC control — and we build it as a seismic support roll forming machine manufacturer working from your section drawing, so the hole pattern, the tooth pattern and the profile all come from one specification.

Line Configuration

1. Material rack. Carries the coil at the head of the line. The standard arrangement is built around coils up to 3,000 kg gross, so the coil weight and bore you intend to buy are worth agreeing before the line is specified.
2. Material roll control switch rack. Governs how the coil releases strip into the line, so the loop ahead of the leveler stays stable whether the coil is full or nearly run out.
3. Leveling machine. Takes the coil set out of the strip before it reaches the rolls. Strip that has been stored on its side for months will not form a square section until that set is removed.
4. Servo feeding machine. Advances the strip by a programmed distance and stops it in the same position for every press stroke — the reason hole pitch stays constant across a long run.
5. Punch press. Pierces the holes and the toothed pattern into the flat strip, before any bending happens.
6. Rolling forming machine. A train of roller stations — the working core of the U channel forming machine — that progressively turns the punched strip into the profile.
7. Rear role cutting molds. Sit at the back of the line and cut the formed channel to the ordered length, with the die set matched to the section.
8. CNC control system. One control for strip feed, punch cycle, line speed and cut length, so a new length or a new batch is a parameter change at the console rather than a mechanical reset.

Punching & Forming Process

• Punching in the flat, before forming. Holes are pierced while the strip is still flat, so pitch is measured on a surface that has not yet been bent. Forming afterwards cannot pull the holes out of line.
• Teeth punched in the same pass. The toothed pattern is produced at the punch press in the same cycle as the holes, which means no second machine, no second operator and no re-registration of the strip between operations.
• Progressive roll forming. The U channel forming machine takes the section through a series of roller stations, each taking a small bite of the bend. Strip on the largest section is formed gradually rather than in one hit, which keeps the section square and the surface clean.
• Cut after forming, not before. The cut happens at the back of the line on the finished profile, so the length is measured on the channel the customer receives rather than on a flat blank.
• One continuous cycle. Coil in, finished channel out, with work in progress measured in one strip length instead of a stack of parts waiting for the next operation. That is the sequence that keeps pitch and length consistent across a full production run — the basis of reliable seismic support channel forming for building MEP projects.

Section Sizes & Technical Parameters

Application Sites

• Seismic bracing workshops. Brace assemblies for sprinkler, HVAC and electrical services are built around lengths of strut channel cut to suit the project drawing. For a bracing shop, a U channel roll forming production line replaces a separate punch and a manual cut, and the toothed profile comes out identical on every piece.
• Comprehensive support hanger production. A comprehensive support hanger production line needs channel in several lengths from one profile, with holes that line up with the hanger components. Entering a new cut length at the control is quicker than re-setting a stop on a saw, and every piece keeps the same hole-to-end relationship.
• Prefabrication shops run by MEP contractors. Where a contractor prefabricates its own supports, channel is usually bought in as standard lengths. Running it in house gives the shop control of length and hole pattern against its own drawings, and removes the wait for a stock length that does not quite fit.
• Duct and pipe support fabrication. Trapeze hangers, ceiling supports and conduit racks all use U channel as the horizontal rail. The line cuts the rail lengths for a batch and forms the same section all day, so rails stack and assemble without sorting.
• Strut channel stockists and distributors. A stockist can run one section as the stock product and change tooling for the sizes that arrive on project orders. For seismic support channel forming for building MEP projects, that is often how one regional stockist keeps several contractors supplied at once.

Machine Build & Control

Frame and mounting. The leveling unit, servo feed, punch press, forming stations and cut-off sit on one fabricated frame along a single datum, with painted steel guarding along the forming section. Because every station on a U channel forming machine is referenced to the same frame, alignment between the punch and the rolls is set at build and checked at installation instead of being re-adjusted for every batch.

Control. Running is from a touchscreen console at the control cabinet. Strip feed, punch cycle, line speed and cut length are entered there and monitored on the same screen, so the operator is not walking between separate machine panels to keep the sequence in step.

Coil quality matters. As a seismic support roll forming machine manufacturer, we build the machine, but the strip going into it decides how consistent the output is. Rust, edge damage or thickness variation along a coil show up as marking or as a drifting profile on the finished channel, so agree the coil specification with us and keep coils dry and supported between runs.

Start of shift. The operator threads the strip through the leveler, checks that the punch is cutting a clean hole and a clean tooth, and measures the first cut length against the control setting before letting the line run. That first-piece check is what protects the rest of the batch.

During the run. One operator is enough for the forming side of a comprehensive support hanger production line: load and thread a coil, call the program, watch the strip into the first forming station, then monitor. Punch slugs collect at the press and the offcut drops behind the cut-off, which keeps the run-off area clear.

Ordering & Delivery

1. Section drawing and punching pattern. Send the profile plus the hole and tooth pattern you need. As the seismic support roll forming machine manufacturer we build the punch tooling, the forming rollers and the cut-off dies against that drawing, so this is the first thing to fix.
2. Strip specification. Tell us the grade, the coating and the thickness you intend to run, and we will confirm the tooling and settings for your order.
3. Coil supply. Confirm the coil weight, bore and outside diameter you will actually buy so the uncoiler is matched to your supply rather than to a nominal figure.
4. Power and floor space. Allow for the total power and line footprint given in the specification table, with coil loading space at the head and run-off at the back. Confirm your voltage and frequency with us before the electrical specification is fixed.
5. Tooling scope. Agree which section tooling sets come with the line and which you want to hold as a second set, since each section runs on its own punch dies, rollers and cut-off dies.
6. Site preparation and handover. Settle the foundation and anchoring requirements, what documentation and operator training you need, and who takes responsibility for installation and commissioning at your factory.
7. Packing and schedule. Ask your sales contact to confirm export packing, container loading, shipping terms and the current production schedule for your order, and agree what will be checked on the first-off sample before dispatch.

Tooling Changeover & Spares

A tooling set per section. Every section size runs on its own set: punch dies for the holes and the tooth pattern, a roller set that forms the profile, and rear cut-off dies matched to the section. U21X41, U41X41 and U62X41 do not share dies, so the number of sets you hold decides which sections your U channel roll forming production line can serve without waiting on a supplier.

The swap itself. The line stops, the strip is run out or cut off, and the punch die, roller set and cut-off die are exchanged for the next section. Because the CNC control keeps feed length, punch cycle and cut length as a stored program for each section, the settings come back from the console once the tooling is in — the operator is not dialling the line back in by hand.

What drives changeover time. Tooling weight, the lifting arrangement around the press and the roll train, and how the sets are stored and marked decide how long a swap takes, far more than the machine frame does. Walk the sequence with us against the sections you actually sell before you order, and set up a rack and a handling routine so a swap stays a planned job rather than an improvisation.

Plan runs, not daily swaps. Every change deserves a first-off check on hole pitch, tooth pattern and cut length, so most shops run one section as their main product and schedule the others in blocks — a run of one size, then a run of the next — instead of switching every morning.

What wears first. The punch dies are the wear item: the cutting edge on the hole and tooth punches dulls first and shows up as a burr or a torn hole edge. Cut-off die edges nick and dull next. Forming rollers and the leveling rolls wear slowly and normally need cleaning and correct setting rather than replacement.

Spares to hold. One spare punch die set for the pattern you run most, a spare set of cut-off die inserts, and a second roller set only if you regularly run two sections. Keep dies lightly oiled on a rack marked by section, and keep the punch and cut-off areas clear of slugs so a replacement goes in clean.

Routine care. At the start of each shift, clean the leveling rolls and the strip path, clear punch slugs and check the first piece against the control setting. Hold the lubrication schedule on the forming station bearings and the drive, and after any tooling change re-check hole pitch and cut length before the run goes into the stack.

Build the spares list with the line. Tell us your section mix and how many shifts you run, and we will set out a first spares package around the wear parts above, with part references so a reorder is straightforward. Ask your sales contact to confirm spares lead time when you place the machine order, so a worn die does not idle the line while the replacement is in transit.

Scale & Supply Capability

Tianjin Coorig Technology Co., Ltd. has been building sheet metal and MEP prefabrication equipment since 2004, with a team of around 200 people working from our own factory in Tianjin, China. In more than 20 years we have supplied buyers in over 35 countries — processing plants, mechanical installation contractors and agents — and we look after export, documentation and shipping as a one-stop service. A database of 3,000+ qualified suppliers, in-house quality control and our automated manufacturing systems keep build quality and delivery predictable. Reference work includes the Beijing Olympic Games, Egypt CBD, Guangzhou Baiyun Airport and BYD's European Center.

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