Solar Mounting Strut Channel Roll Forming Machine | 41×41 & 41×21 PV Bracket Line, 2–3.5 mm – PUTAI Tianjin, China

PUTAI Solar Mounting Strut Channel Roll Forming Machine – 41×41 and 41×21 PV Bracket Production Line

The PUTAI solar mounting strut channel roll forming machine is a heavy-duty automatic line for producing the steel strut channels that form the structural backbone of solar panel mounting and racking systems. It forms 2–3.5 mm steel strip into 41×41 mm and 41×21 mm strut profiles, integrating punching, roll forming and servo tracking cutting in one continuous process. With 90 mm shafts, 18 forming stations and a gearbox drive, the machine is built for the thicker material and tight tolerances that solar racking manufacturers need for ground-mount, rooftop and carport systems.

What Is a Solar Strut Channel?

• A C-shaped steel channel with inturned lips, used as the main rail and support member in solar mounting structures
• Supports, secures and aligns photovoltaic modules over a service life of decades
• Standard sizes include 41×41 mm and 41×21 mm, with punched slots for fast bolted assembly
• Compatible with standard strut fittings, clamps and channel nuts

Key Features

• Produces 41×41 mm and 41×21 mm strut channel profiles
• Handles heavy-gauge steel from 2 to 3.5 mm
• Integrated punching, forming and cutting in one line
• Heavy-duty 90 mm forged shafts for rigidity under thick material loads
• 18 forming stations for accurate lip and flange geometry
• Gearbox drive with universal joints for smooth, high-torque power transmission
• Servo tracking cutting system cuts to length without stopping the line
• Length set by encoder counting or photoelectric detection of punched holes
• Archway roller stands with graduated adjusting nuts for accurate, repeatable setup
• Hydraulic cylinders and pumps in national standard sizes, easy to replace worldwide

Technical Specifications

• Profiles: 41×41 mm and 41×21 mm strut channel
• Material: Galvanized steel
• Material thickness: 2 – 3.5 mm
• Forming stations: 18
• Roller material: Cr12 (D3), forged
• Shaft diameter: 90 mm
• Shaft material: 40Cr steel
• Speed: 0 – 20 m/min
• Transmission: Gearbox with universal joints
• Cutting system: Servo tracking cut-off
• Machine weight: Approx. 4,000 kg
• Automation: Automatic

How the Production Line Works

• Decoiling: The steel coil is loaded onto the uncoiler and fed into the line
• Straightening: Adjustable rollers remove coil curvature and residual stress
• Edge guiding: The strip is centred as it enters the line
• Punching: Mounting slots and holes are punched in line
• Roll forming: 18 stations bend the strip step by step into the strut profile
• Servo cutting: The tracking cutter measures and cuts each channel while the line keeps running

Applications

• Solar ground-mount systems: Horizontal rails and vertical supports for utility-scale solar farms
• Rooftop mounting systems: Rails for ballasted and penetrating installations on commercial and industrial roofs
• Solar carports: Main structural members for canopy structures
• General strut uses: Electrical, mechanical and building services support framing

Commercial Details

• Brand: PUTAI Technology
• Place of origin: Tianjin, China
• Minimum order: 1 set
• Colour: Customised
• Packing: Plastic film wrap for export
• Warranty: One year
• After-sales: Engineer support provided

Frequently Asked Questions

• Which strut sizes can the machine produce? 41×41 mm and 41×21 mm strut channel, with other sizes available to your drawing.
• What thickness of steel can it form? 2–3.5 mm galvanized steel.
• Does it punch the mounting slots in line? Yes. Punching, forming and cutting are integrated in one continuous line.
• Why are 90 mm shafts important? Thick steel puts heavy load on the forming stations. Larger shafts resist deflection, keeping the profile accurate along the full length.
• How fast does it run? Up to 20 m/min, depending on thickness and punching pattern.
• Is it suitable for general electrical strut as well as solar? Yes. The same 41 mm profiles are widely used for electrical and mechanical support framing.
• What should I send for a quotation? Your strut profile and punching drawings, material thickness, required output, and local voltage and frequency.