C Z Purlin Roll Forming Machine | Interchangeable C and Z Steel Purlin Production Line – PUTAI Tianjin, China

PUTAI Steel C Z Purlin Roll Forming Machine – Interchangeable C and Z Purlin Production Line

The PUTAI C Z purlin roll forming machine produces both C-shaped and Z-shaped steel purlins on one line, giving steel building manufacturers the flexibility to supply roof and wall framing for a wide range of projects. It cold forms 1–3 mm steel coil at room temperature through 18 precision forming stations, delivering accurate profiles with a clean surface finish and minimal waste. Switching between C and Z profiles is handled through the PLC in under 30 minutes, while a servo cutting system holds length accuracy to ±1 mm at speeds of up to 25 m/min.

What Are C and Z Purlins?

• Cold-formed steel sections that support roof sheeting and wall cladding in steel buildings
• C purlins: Used for roof beams, bracing and shorter spans
• Z purlins: Used for roof purlins and wall girts, and can be lapped over supports for continuous spans and greater strength
• Lighter and faster to install than hot-rolled sections, and resistant to rot, pests and fire

Key Features

• One machine produces both C and Z purlins
• Fast changeover between C and Z profiles in under 30 minutes via PLC control
• Handles 1–3 mm steel for light and heavy purlin sections
• 18 forming stations for accurate, consistent profiles
• Servo cutting system with ±1 mm length accuracy
• Delta PLC control for easy setting of length, quantity and profile
• Gearbox drive for high-torque, stable running with low maintenance
• Graduated adjusting nuts for precise, repeatable roller setup
• Cr12 cutting blades for long blade life on thick material

Technical Specifications

• Profiles: C purlin, Z purlin
• Material: Galvanized or black steel coil
• Material thickness: 1 – 3 mm
• Forming stations: 18
• Roller material: Cr12 (D3)
• Shaft material: 45# steel, forged
• Speed: Up to 25 m/min
• Transmission: Gearbox drive
• Cutting system: Servo cutting, ±1 mm accuracy
• Cutting blade material: Cr12
• Control system: Delta PLC
• Machine size: Approx. 7,300 × 1,500 × 2,250 mm

How the Machine Works

• Decoiling: The steel coil is loaded and fed into the line
• Roll forming: 18 stations gradually shape the strip into a C or Z profile at room temperature
• Profile change: The operator selects C or Z on the PLC, and the line is reset for the new profile
• Servo cutting: Each purlin is cut to the programmed length with ±1 mm accuracy
• Output: Finished purlins are collected for bundling and dispatch

Applications

• Roof purlins in steel-framed buildings
• Wall girts for cladding support
• Roof beams and bracing
• Warehouses, factories and workshops
• Agricultural buildings, sheds and barns
• Prefabricated steel buildings and solar structures

Commercial Details

• Brand: PUTAI Technology
• Place of origin: Tianjin, China
• Minimum order: 1 set
• Colour: Customised
• Packing: Standard waterproof export packaging
• Delivery time: 55 days
• Warranty: One year
• After-sales: Engineer support provided

Frequently Asked Questions

• Can one machine make both C and Z purlins? Yes. The line produces both profiles and switches between them in under 30 minutes through the PLC.
• What thickness can it form? 1–3 mm steel.
• How accurate is the cut length? The servo cutting system holds ±1 mm.
• How fast does it run? Up to 25 m/min, depending on thickness.
• What control system is used? A Delta PLC for setting profile, length and quantity.
• What is the difference between C and Z purlins? C purlins suit simple spans and bracing, while Z purlins can be overlapped at supports to create stronger continuous spans, making them popular for larger roofs.
• How long is delivery? Around 55 days.
• What should I send for a quotation? Your purlin drawings with web, flange and lip sizes, thickness range, punching requirements, target output, and local voltage and frequency.