... alloy steel bar 1.Grade:200,300,400 series 2.Size: 5mm*5mm-260*260mm 3.Surface: cold draw,pickled ... ,polished etc stainless steel square bar 1.Grade:ss201,202,301,302 ... 2.Size: 5mm*5mm-260*260mm3.Surface: cold draw,pickled ,polished,brush etc4.Standard:GB,ASTM,JIS, ... ,DIN,EN,SUS etc.5.Stianless steel square bar is widely applied for petroleum,chemical,mechanical and ...