The constitutive element of the steel wire rope is the wire. It is obtained from the wire rod, by the operation of drawing. The assembly of several wires arranged helically around a central core composed of a metal wire or textile fiber, constitutes the strand. The rope is the set of a number of strands that are arranged around a textile or metal core through the stranding operation. The strands, before this step, are subjected to the preformation. This operation allows to give them the helical shape that they will assume in the final formation of the rope.