... (1Cr13),420(2Cr13),430(1Cr17)Etc.Shape: Round ,Hex square,angle,flat,SquareStandard: ASTM ,EN10272,JIS4303,JIS G-4311,AISI,GBSurface: Brightness ... 1.0mm~50mmTurn smooth bar, It is from 20mm~220mmHex square bar, It is form 2.5mm~10mmSquare bar, It is ...