Product Overview

The Fully Automatic 80-300mm CZ Purlin Machine is designed for steel structure fabricators, commercial building contractors, and pre-engineered metal building suppliers. C-sections and Z-sections are indispensable secondary structural members that support roof panels and wall cladding sheets while providing lateral bracing to main portal frames.

Equipped with precision motorized screw-jack width adjusters, the machine accommodates web widths from 80mm to 300mm, flange heights from 40mm to 80mm, and lips from 10mm to 20mm across thicknesses from 1.0mm to 3.0mm. The line produces precision slotted bolt holes at continuous line speeds up to 30 m/min, streamlining site assembly.

1: Fully Automatic CZ Purlin Machine Overview & Punched Samples

Key Technical Features

• Touchscreen Automated Size Adjustment: Motorized linear actuators adjust roller clearances across all 20 stations simultaneously, eliminating hours of manual shimming and setup time.
• Cr12 Mould Steel Rollers: All forming rollers are precision CNC machined from forged Cr12 tool steel and vacuum heat-treated for maximum dimensional stability and wear life.
• Integrated Multi-Hole Hydraulic Punching: Hydraulic pre-punching stations punch web holes, flange slots, and overlapping oval connection holes with extreme positional accuracy.
• Universal Hydraulic Profile Cut-Off: Single set of stepless Cr12MoV cutting blades cuts all C and Z profiles from 80mm to 300mm web widths without tool changeover.
• Integrated Post-Straightening Unit: 10-roller two-plane straightening mechanism eliminates bow, camber, and twist in heavy 3.0mm structural purlins.

2: Front Hydraulic Dual-Cylinder Cut-Off & Punching Assembly

Technical Specifications

Parameter / Item	Standard Specification
Equipment Model	Fully Automatic 80-300mm CZ Purlin Machine
Purlin Types Produced	C-Purlin (C-Section) & Z-Purlin (Z-Section) Interchangeable
C Purlin Size Range	Web: 80 - 300 mm; Flange: 40 - 80 mm; Lip: 10 - 20 mm
Z Purlin Size Range	Web: 120 - 300 mm; Flange: 40 - 80 mm; Lip: 10 - 20 mm
Material Thickness Range	1.0 mm - 3.0 mm (Heavy Structural Steel)
Applicable Raw Material	Galvanized Steel Strip (GI), Hot Rolled / Cold Rolled Steel (Q235/Q355)
Forming Production Speed	Up to 30 m/min continuous rolling speed
Forming Roller Stations	20 Progressive Stations + Multi-Roller Straightening Head
Main Drive Motor Power	15 kW Heavy-Duty Industrial Motor with Gearbox Transmission
Roller Material & Treatment	Cr12 Alloy Tool Steel, Vacuum Quenched (HRC 58-62)
Shaft Material & Diameter	High Grade No.45 Forged Steel, High-Frequency Quenched & Tempered
Hydraulic Punching System	Pre-Punching System with Hydraulic Cylinders for Web & Flange Holes
Cut-Off Mechanism & Tooling	Universal Hydraulic Shearing, Cr12MoV Die Steel (Stepless for all sizes)
Size & Profile Change Method	Fully Automatic Motorized Adjustment via PLC Touchscreen (<5 Mins)
Control System	Siemens / Delta Industrial PLC Touchscreen Automation
Length Measurement Precision	±1.0 mm (Rotary Optical Encoder)
Operating Voltage	220V / 380V / 440V, 50Hz/60Hz, 3 Phase (Customizable)
Total Machine Weight	Approx. 15,000 kg (15 Tons Heavy Industrial Build)
Warranty & Factory Inspection	More Than 5 Years warranty; Lifelong engineering technical support
Quality Certification	CE Certified (Directives: 2006/42/EC & 2014/35/EU), BV, STV, ISO9001

3: Motorized Width Adjusters & Screw-Jack Mechanism Detail 

20-Station Heavy Cold Bending & Straightening

Forming high-yield 3.0mm structural steel into rigid C and Z profiles demands extreme roll stability. The 20 forming stations apply graduated bending forces to crisp 90° angles without material thinning or cracking.

• Gradual Forming Progression: 20 stations progressively form lips, flanges, and web without edge stretch.
• Synchronized Motorized Adjustment: Integrated screw shafts driven by individual auxiliary motors shift roller stands to new web/flange settings simultaneously.
• Heavy Gearbox Drive Transmission: Direct heavy gearbox drive delivers massive rotational torque to lower and upper shafts under 3.0mm coil rolling.

4: C & Z Purlin Profile Geometry & Steel Frame Lap Schematic

C & Z Structural Purlin Profile Geometry

Manufactured in full compliance with international building framing standards (including ASTM A653, AS/NZS 4600, Eurocode 3):

• C-Purlin Channels: Symmetric C-sections ideal for single-span purlins, door headers, wall girts, and solar tracker frames.
• Z-Purlin Channels: Asymmetric Z-sections with complementary flange angles that nest together for continuous multi-span lap joints over portal rafters.
• Accurate Slot Hole Patterns: Standard web and flange slots accommodate M12/M16 cleat bolts for rapid bolt-up field installation.

Broad Agricultural & Industrial Applications

C and Z structural purlins are the foundational framework of modern commercial and industrial construction:

• Pre-Engineered Steel Buildings (PEB): High-strength roof purlins and wall girts spanning up to 9 meters between structural portal frames.
• Solar Photovoltaic Ground Racking: Durable hot-dip galvanized C-channels and torque tubes for solar panel ground mounts.
• Logistics Warehouses & Mezzanines: Rigid floor joists and framing members delivering exceptional strength-to-weight ratios.

Supply Scope & Ocean Shipping

Turnkey supply scope includes 5-ton hydraulic decoiler with coil car, 20-station quick-change roll forming machine, hydraulic pre-punching station with dies, universal hydraulic cut-off station, standalone hydraulic pump station, Siemens PLC touchscreen console, and heavy runout stacker tables.

All bare precision Cr12 rollers and shafts are coated with anti-rust protective oil. The 15-ton machine chassis is securely anchored inside a 40ft HQ shipping container using steel wire cables and timber chocks. The electrical control console and hydraulic station are hermetically wrapped in waterproof film and crated in export plywood cases.

Quality Standards & Factory Scale

Manufactured in compliance with ISO9001 quality management benchmarks, Bureau Veritas (BV), and STV standards. The production line holds official CE compliance certification under Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU.

5: CE Certification & ISO9001 Quality Management Verification
6: Modern Manufacturing Facility, Showroom & Assembly Workshop

Frequently Asked Questions (FAQ)