15-225-900 roof forming machine pressure plate connected to break the traditional roofing screw gun connection with the practice installation methods Cai Lan port with a 45-degree bite installation, make roofing better. Technical Parameters Transmission: sprocket, chain cutting mold: Gr12 repression thickness :0.2-0 .7 mm Width repression: 1000m Pressure plate Model 15-225-900 purposes Effective Width (mm) 900 Width expand (mm) 1000 roof , wall plate wave height (mm) 15 Thickness (mm) 0.3-0.8