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The Auto Size Changeable C Z Purlin Roll Forming Machine is an advanced cold roll-forming system developed by ZTRFM for producing high-quality C- and Z-shaped steel purlins. This machine is widely used in steel structure construction, roofing systems, industrial buildings, and renovation projects.
This automatic purlin roll forming machine can manufacture C and Z purlins with adjustable widths ranging from 100mm to 300mm. Normally, the machine processes steel materials with thicknesses of 1.5-3mm. In comparison, ZTRFM can also customize the machine structure to handle thicker materials from 4.0mm to 6.0mm according to customers’ production requirements.
Unlike traditional purlin machines that require manual roller replacement for different sizes, ZTRFM designs this machine with an automatic size adjustment system controlled by PLC. Therefore, operators can quickly change purlin dimensions through the control panel, improving production efficiency and reducing unnecessary downtime.
ZTRFM provides complete solutions for global customers. Our professional international trade team offers technical communication and after-sales support to help customers successfully operate the equipment worldwide. At the same time, more than 20 experienced engineers continuously optimize machine structures and components to meet different production requirements. Every manufacturing process follows strict ISO quality management standards to ensure reliable machine performance.
The biggest feature of this Automatic C Z Purlin Roll Forming Machine is its intelligent size-changing function. ZTRFM integrates automatic adjustment motors and PLC control technology, allowing the machine to produce different purlin specifications without manually changing rollers.
Furthermore, the machine supports both C purlin and Z purlin production. When switching between C and Z profiles, the adjustment process only requires approximately 10 minutes, which significantly improves production flexibility and saves valuable working time.
The machine can manufacture various structural purlins, including:
The adjustable production range includes:
According to customers’ profile drawings, production capacity, tolerance requirements, and investment budget, ZTRFM engineers provide customized machine solutions. For customers who only require several fixed sizes, ZTRFM can also provide manual size adjustment systems, which offer a more economical choice.
The complete C/Z Purlin Roll Forming Machine Production Line integrates multiple working units to achieve continuous automatic production. The production line usually includes a decoiler, leveling system, punching system, roll forming system, and cutting system.
Before forming, the decoiler automatically feeds the steel coil into the production line. The leveling device straightens the raw material and improves forming accuracy. After that, the punching unit creates holes or slots according to customer drawings.
For punching requirements, ZTRFM provides flexible solutions:
Customers can select the suitable punching method according to their production process.
In addition, the cutting system can also be customized according to different applications:
The universal cutting method allows the machine to produce different lengths efficiently without frequently replacing cutting tools.
For the driving system, ZTRFM selects suitable transmission solutions according to material thickness. When processing materials thicker than 2.5mm, the machine can adopt a stronger gearbox and gimbal transmission system, which provides higher driving force and more stable forming performance compared with ordinary transmission structures.
ZTRFM focuses on mechanical stability and long-term operation reliability. The machine adopts high-quality forming rollers, precise processing technology, and durable components to ensure that every produced purlin meets required dimensional accuracy.
The forming rollers are manufactured from high-strength materials such as GCr15, while customers can also choose Cr12MoV rollers for higher wear resistance.
The detailed specifications are listed below:
| Parameter | Specification |
|---|---|
| Machine Type | Auto Size Changeable C/Z Purlin Roll Forming Machine |
| Processing Material | Galvanized Coil / Carbon Steel Coil |
| Material Thickness | 1.5-3mm (Customized 4-6mm available) |
| Yield Strength | 250-550 MPa |
| Tensile Strength | G350 MPa-G550 MPa |
| Production Width | 100-300mm |
| Production Height | 50-100mm |
| Forming Stations | 16-18 Stations |
| Forming Speed | 10-20 m/min (Customized available) |
| Decoiler | Manual Decoiler / Hydraulic Decoiler Optional |
| Punching System | Hydraulic Punching Station |
| Punching Method | Pre-punch / Post-punch Optional |
| Driving System | Chain Drive / Gearbox Drive Optional |
| Machine Frame | Wall Panel Station / Forged Iron Station Optional |
| Roller Material | GCr15 / Cr12MoV Optional |
| Cutting System | Pre-cut / Post Universal Cutting Optional |
| PLC Brand | Panasonic / Siemens Optional |
| Frequency Converter | Yaskawa / Siemens Optional |
| Power Supply | 380V 50Hz or Customized |
| Machine Color | Industrial Blue or Customized |
A C Purlin Roll Forming Machine is an industrial production system used to manufacture C-shaped steel purlins. The machine gradually forms flat metal coils into C profiles through a series of precision rollers.
During production, the machine normally includes a decoiler, leveling unit, punching system, forming stations, and cutting device. These components work together automatically to feed, straighten, shape, punch, and cut steel materials into finished C purlins.
C purlins are widely used as structural support components in:
A Z Purlin Roll Forming Machine is designed to produce Z-shaped steel purlins. Similar to C purlin machines, it uses roller forming technology to transform flat steel coils into accurate Z profiles.
Z purlins are commonly applied in:
Because Z-shaped profiles provide excellent overlapping performance, they are especially suitable for large construction structures requiring strong load-bearing capacity.


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