... , rack, stud & track, c/z/u purlin, etc Light Steel Keel Roll Forming Machine The machine is used to manufacture coil ... , guardrail plate, etc. It can form galvanized steel, stainless steel, aluminum sheet, etc.Components It mainly includes uncoiler, main forming machine ... forming--> hole punching (optional) --> calibrating--> automatic cutting --> output Light Steel Keel Roll Forming Machine