old roll forming is a kind of cold bending processing, it is an efficient, effective shaping that delivers tight tolerances on complex profiles. It is the process of gradually bending a flat strip or coil of metal into a longitudinal, uniform profile. To get the desired shape, the operator passes the workpieces through a series of mated tool dies.
Cold roll forming is a cold forming process that doesn’t require heating up the metal. High-temperature, specialized equipment isn’t necessary to produce cold rolled shapes.