Full Automatic exchangeable Metal Roofing Purlin Z Purlin Roll Forming Machine This model is full automatic production. Especially, exchange the different sizes by computer control and more faster. Only 1-2 minites can finished the changing size. Specification No. Item Description 1 Coil Galvanized Material Thickness 1 mm- 3 mm 3 Working Speed 20- 25 m/min ( not including the cutting time) 4 Roller Station 15 Raws 5 Dimension (L*W*H) 8000 mm*1000 mm*1300 mm 6 Machine Weight