... steel,carbon steel Surface:nickel-plated,white zinc plated,blue zinc plated,color zinc plated Packing :carton box,poly bag ... SCM435,C10B21,C10B33Specification& gaugeM3-M6Surface FinishingZn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodize,Chromate, Polish,Electro ... Painting,Black Anodize,Plain,Chrome plated etc.Heat TreatmentTempering,Hardening,Spheroidizing,Stress Relieving. ...