... , c/z/u purlin, etc Light Steel Keel Roll Forming Machine The machine is used to manufacture coil steel ... bridge, electric cabinet column, guardrail plate, etc. It can form galvanized steel, stainless steel, aluminum sheet, etc.Components It ... 2-252-252-202-15Shaft diameter(mm)40506070Work flowDecoiler --> leveling --> roll forming--> hole punching (optional) --> calibrating--> automatic cutting --> ...