Steel fiber due to the different production methods and divided into melt extraction, drawing off type,shear type and cutting etc.. Shear steel fiber now can produce flat torsion shaped, wavy, end of the hook shaped bow and indentation shape, five shape over 20 specifications of the products. Steelfiber and because the different raw materials and divided into carbon steel fiber and special steel fiber. Carbon fiber using cold-rolled steel strip Q195, Q215, Q235 as raw material; special steel fiberis used 304#, 446# and other stainless steel raw materials or the customer designated special steel material forming processing of raw materials.