This 840/850 Double Layer Roll Forming Machine is designed for manufacturers who need flexible production of two standard roofing sheet profiles on one compact machine. With electric shear cutting and PLC automatic control, the machine ensures precise length cutting, smooth sheet surfaces, and continuous, stable operation while saving factory space and reducing investment cost.
Machine Type: Double layer roll forming machine
Forming Layers: Upper and lower independent forming layers
Cutting System: Electric shear cutting
Profile Type: 840 / 850 metal roofing sheets
Raw Material: PPGI, GI, color steel, galvanized steel
Material Thickness: 0.3–0.8 mm
Effective Width: 840 mm / 850 mm
Forming Speed: 10–20 m/min
Roller Stations: 14–18 stations per layer
Roller Material: High precision 45# steel, heat treated
Shaft Diameter: 70–80 mm
Shaft Material: Solid forged steel
Frame Structure: Heavy-duty welded steel frame
Drive System: Chain drive transmission
Main Motor Power: 7.5–11 kW
Cutting Accuracy: ±1 mm
Control System: PLC automatic control
Operation Interface: Touch screen HMI
Length Measurement: Encoder automatic control
Profile Switching: Manual or electric switching
Production Mode: Fully automatic continuous production
Electrical Components: International brand
Voltage Standard: 380V / 50Hz / 3 Phase (customizable)
Noise Level: Low working noise
Surface Quality: Smooth and scratch-free finished sheets
Safety System: Emergency stop and safety covers
Maintenance Cost: Low maintenance requirement
Machine Color: Blue / customizable
Brand: TOPPO Machinery
Certification: CE / ISO
Service Life: Long-term industrial use
Customization: Profile drawings supported
Production Efficiency: High output capacity
Space Saving Design: Two profiles in one machine
Cost Saving: Reduced equipment investment
Installation: Easy on-site installation
Application Industry: Steel structure & construction
The electric shear cutting system provides clean cutting edges and fast response, minimizing material waste. The double layer structure allows quick switching between 840 and 850 profiles without changing rollers, making this machine highly suitable for roofing sheet manufacturers handling diverse orders.
Widely used in industrial plants, warehouses, workshops, commercial buildings, residential housing, and steel structure roofing and wall panel construction projects.
