... ASTM, GB, JIS, DIN, ASME, etc.Surface finish:No. 2B, No. 3, No.4,BAUsage:construction field, building industry, petroleum & chemical ... industries, machinary, hardware fields, and so on.Package detail:Wraps ... HL Polished with abrasive belt of grit #150-#320 on the NO.4 finish and has continuous streaks, mainly used as ...