Trapezoidal Roof Sheet Roll Forming Machine | PUTAI, Tianjin, China

PUTAI Trapezoidal Roof Sheet Roll Forming Machine – Made in Tianjin, China

The PUTAI trapezoidal roof sheet roll forming machine is an automatic production line that turns flat galvanized or pre-painted steel coil into strong, deep-rib trapezoidal roofing and cladding sheets. Built at PUTAI's factory in Tianjin, China, it shapes 0.4–0.6 mm steel through 20 precision forming stations, then cuts each sheet to the programmed length with a guide pillar cutting system. The finished panels are consistent, high-strength and ready to install on industrial, commercial and agricultural buildings.

What Is a Trapezoidal Roof Sheet?

• A metal roofing and cladding sheet with evenly spaced trapezoid-shaped ribs
• The deep ribs give high strength and stiffness, allowing longer spans between purlins
• Sheds rainwater quickly and overlaps neatly for a weathertight roof
• Commonly made from galvanized (zinc-coated) or pre-painted steel for long-lasting corrosion protection
• One of the most widely used roofing profiles for warehouses, factories and farm buildings

Key Features

• Produces deep-rib trapezoidal sheets for roofing and wall cladding
• 20 forming stations for accurate rib shape and flat, even panels
• Heavy-duty 75 mm forged shafts for rigid, stable forming across the full sheet width
• Guide pillar cutting system for clean, square cuts
• PLC control for easy setting of sheet length and quantity
• 7.5 kW main motor with chain drive
• Cr12 rollers for high wear resistance and long service life
• Archway roller stands with graduated adjusting nuts for quick, repeatable setup

Technical Specifications

• Product: Trapezoidal roof and wall sheets
• Material: Galvanized steel (GI), pre-painted steel (PPGI)
• Material thickness: 0.4 – 0.6 mm
• Forming stations: 20
• Roller material: Cr12 (D3)
• Shaft diameter: 75 mm
• Shaft material: 45# steel, forged
• Speed: 0 – 15 m/min
• Transmission: Chain drive
• Main motor power: 7.5 kW
• Cutting system: Guide pillar cutting
• Control system: PLC
• Machine weight: Approx. 4,000 kg

How the Production Line Works

• Decoiling: The steel coil is loaded and fed into the line
• Roll forming: 20 stations progressively shape the flat strip into the trapezoidal profile
• Cutting: The guide pillar cutter cuts each sheet to the programmed length
• Output: Finished sheets are collected ready for stacking and dispatch

Applications

• Industrial buildings, warehouses and factories
• Commercial buildings and retail units
• Agricultural sheds, barns and livestock buildings
• Wall cladding and facades
• Carports, canopies and site buildings

Commercial Details

• Brand: PUTAI Technology
• Manufacturer: Tianjin PUTAI Technology Co., Ltd
• 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

• Where is this machine made? It is manufactured by Tianjin PUTAI Technology Co., Ltd at its factory in Tianjin, China, and exported worldwide.
• What materials can it form? Galvanized and pre-painted steel from 0.4 to 0.6 mm.
• Is "zinc roofing" the same as galvanized steel? Yes. In many markets, zinc roofing refers to galvanized steel sheet, which is steel coated with zinc for corrosion protection.
• How fast does it run? Up to 15 m/min.
• Can the profile be customised? Yes. Rib height, pitch and cover width can be built to your drawing.
• What should I send for a quotation? Your profile drawing with cover width, rib height and pitch, coil width, thickness, target output, and local voltage and frequency.