... 3)Tolerance:h9-h7 4)Normal: dia6.0-250m Stainless Steel round barGrade:200Series - 201,202,204,205300Series - 301,302,303 ... 321,400Series - 410 (1Cr13),420(2Cr13),430(1Cr17) Shape: Round ,Hex square,angle,flat,SquareStandard: ASTM ,EN10272,JIS4303,JIS G ... bar, It is from 3.0mm~160mm Cold drawn round bar, It is from 1.0mm~50mm Turn smooth ... our factory 304/316/201/202 bright stainless steel round bar