... Length:according to client's request quality:superio420F stainless steel round barSize: 8mm-150mmSurface: bright or blackLength: 4000mm-6000mmStandard: AISI, ASTM ... ,420,420 F.Standard: AISI, ASTM, GB, JIS, BS, DINUse: machine manufacture, vehicles, ships, construction, chemical industry, food industry, household appliances ...