... Bar Round Bar TypeHot-forging, Hot Rolled, Cold Drawn, Bright Finish and Black Finsh Round BarStandardJIS, AISI, ASTM, GB, BS, DIN, ENDiameter2 ... / Quenchingand Tempering/ Solution/ Aging/ Slow CoolingTolerance+/-0.2mmSurfaceBright Finish, Black Finish, Grinding Finishe, Roughing Finish.CertificateISO9001m, ROHS, MTC or do a test according to ...