Roll forming, also called Cold roll forming, is a method of shaping hard metals, such as steels and stainless steels. Very precise, complex cross-sections can be created, and long lengths of these sections can be consistently reproduced.
Along each length, features such as holes, slots, or embosses can easily be added, making the roll forming process a very cost effective method of achieving a strong, multi-functional shape. Roll forming is used instead of extrusion, where the metal required cannot easily be extruded, or where the features along the length of the part are uneconomic to add to an extrusion, or where an extrusion is not accurate enough.
Cold roll forming machine can do most of the fabrication needs on the cold formed steel products fully automatically on-line. Not only roll forming, but also punching for holes or slots, cutting to length, and pressing embossed patterns etc. Therefore, lots of roofing contracts and steel building materials distributions finally have made the decision to purchase their own cold roll forming machine.