Cangzhou Zhongtuo Roll Forming Machinery Co., Ltd. specializes in manufacturing precision-engineered C purlin making machines since 2014. Our machines can process materials with thickness of 1-3.5mm and achieve forming rates of 8-15m/min thanks to 12-16 progressive forming stations. Each machine is mounted on a sturdy 400 H steel frame and is equipped with an 11-15kw main motor power and 5.5-7.5kw hydraulic cutting systems and uses Cr12 steel blades hardened to 60-62°c for a longer service life. Chain transmission enables stable power transfer and 45# steel shaft maintains the structural integrity during the ongoing manufacturing process.
We are a national high-tech firm, partners in 150+ countries. ISO 9001 Certified, CE Compliant, 10 Years Export Experience. We provide dependable structural steel forming solutions.

C-shaped steel channels are widely used as the main structural members in pre-engineered buildings, solar mounting systems and industrial structures. Their characteristic shape allows for a good load-bearing capability at material efficiency.
Unlike conventional manufacturing processes, the continuous cold roll forming has the advantage of uniform cross-sectional dimensions across thousands of meters. The accuracy allows for precise fit while installing, reducing the need for on-site changes and lowering labour expenses.
The galvanised coating of our equipment is compatible and extends the service life in harsh conditions by preserving the zinc protective layers. These are perfect for coastal construction and agricultural buildings subject to wetness.
|
Component |
Specification |
Material/Feature |
|
Material Thickness |
1-3.5mm |
Galvanized/Hot-rolled steel |
|
Forming Stations |
12-16 stations |
Progressive roll forming |
|
Frame Structure |
400 H steel |
Diagonal welding, precision leveled |
|
Main Shaft |
φ80-90mm |
45# steel, heat treated |
|
Forming Speed |
8-15m/min |
Adjustable based on complexity |
|
Main Motor |
11-15kw |
Three-phase 380V 50Hz |
|
Transmission |
Chain drive |
2-inch heavy-duty chain |
|
Cutting System |
Hydraulic |
5.5-7.5kw power |
|
Blade Material |
Cr12 steel |
Quenched to HRC 60-62 |
|
Roller Material |
GCr15 forged steel |
Chrome plated 0.05mm |
Pre-Engineered Building Systems
Your construction projects demand purlins with precise punching coordinates for bolt alignment. Our machines maintain ±0.5mm hole positioning accuracy, ensuring seamless integration with primary steel frames in warehouses and factories.
Solar Energy Infrastructure
When installing photovoltaic arrays, surface integrity matters. Our chromium-plated rollers process high-zinc coatings (Z275-Z600) without scratching, preserving corrosion resistance for 25+ year system lifespans.
Mezzanine and Racking Systems
Heavy-duty storage requires profiles without twist or camber. The straightening block post-cutting system eliminates deformation, delivering vertical stability for multi-tier warehouse installations.
Agricultural and Livestock Facilities
Ammonia-rich environments accelerate steel degradation. By maintaining protective coatings during forming, your structures resist chemical corrosion in poultry houses and dairy barns.
Automatic Size Changeover Capability
Modern facilities require quick adaptation to varying project specifications. While manual adjustment systems need 2-4 hours, PLC-controlled linear guide systems change dimensions in 2-5 minutes, minimizing production downtime.
CZ Interchangeable Configuration
Maximize equipment utilization with 180-degree rotating forming stations. This allows you to switch between C and Z profiles on the same machine, serving diverse client requirements without additional capital investment.
Integrated Punching System
Servo-driven punching units create holes, slots, and notches during the forming process. This eliminates secondary operations, reducing handling and improving dimensional accuracy for connection points.
Hydraulic Cutting Precision
Length accuracy directly affects installation speed. Our hydraulic shear systems deliver cuts with ±2mm tolerance across 6-meter spans, ensuring consistent quality for structural calculations.
Zhongtuo maintains active partnerships with Yanshan University's National Cold Rolled Strip Equipment Engineering Research Center. This collaboration applies finite element analysis and AI-assisted simulation to optimize roller design.
Graduate researchers stationed at our facility conduct virtual debugging before physical commissioning. This reduces trial costs and ensures your C purlin making machine achieves specification compliance from the first production run.
Cloud-based remote monitoring systems enable real-time diagnostics for international customers. When technical questions arise, our engineering team accesses machine data to provide rapid troubleshooting support.
Blade and Die Service Life
Cr12MoV mold steel tooling delivers 100,000-200,000 cutting cycles before requiring sharpening. Proper lubrication and gap adjustment for specific material thickness extends replacement intervals, lowering operational costs.
Roller Wear Management
Processing G550 high-tensile steel demands hardened rollers. Our vacuum heat-treated Cr12MoV rollers maintain HRC 58-62 hardness, resisting surface degradation during heavy-duty continuous production.
Foundation Requirements
While our machines feature self-contained rigid bases, placement on reinforced concrete floors (minimum 150mm depth) prevents vibration-induced misalignment. Ensure level surfaces for optimal profile quality.
Lubrication Schedules
Chain transmission systems require regular lubrication every 200 operating hours. The hydraulic cutting system needs fluid checks every 500 hours to maintain consistent pressure and cutting quality.
Q:How does automatic adjustment differ from manual systems?
A:Manual machines require spacer removal and individual stand repositioning, taking 2-4 hours. Automatic systems use PLC-controlled linear guides to adjust one side of forming stands, completing changes in 2-5 minutes.
Q:Can the machine produce both C and Z profiles?
A:Yes, CZ Interchangeable Machines utilize rotating forming station assemblies, often with 180-degree turnover mechanisms. This allows switching between profiles without replacing roller sets, ideal for diversified project portfolios.
Q:What causes twist in finished purlins and how is it corrected?
A:Uneven roller pressure or material stress creates twist. Solutions include adjusting roller gaps for even pressure distribution and utilizing post-cutting straightening blocks. Ensuring centered coil feeding prevents input-side stress.
Q:Do you provide installation support for international customers?
A:Our technicians offer on-site commissioning services globally, covering machine setup, operator training, and production optimization. Video support and remote diagnostics supplement physical visits for ongoing support.
Q:What material grades can the machine process?
A:Standard configurations handle galvanized steel (DX51D, SGCC), hot-rolled pickled steel (S235-S355), and pre-painted coils. For high-tensile grades (G450+), we recommend upgraded roller materials to prevent premature wear.
Ready to enhance your structural steel production capabilities with the C purlin making machine? Contact our technical team at zhongtuorollforming@gmail.com for customized machine configurations and quotations tailored to your project requirements.