... finished Certificate:ISO OEM available 316 Stainless Tool Steel Bar(Round,Square,Angle,Flat,Channel,Hex) Specifications 1) Standard : GB ... Surface finish: 2B, BA, Hair Line, No.1, No.4, Mirror Finish7. Techniques: Hot-rolled, cold-drawn, Centerless Grinding, ... industry4). Boiler heat exchanger, machinery and hardware fieldsStainless Steel Bar : Stainless steel bar (round bar , angel bar, flat bar ...