... steel bar 1.Grade:200,300,400 series 2.Size: 5mm*5mm-260*260mm 3.Surface: cold draw,pickled ,polished etc stainless steel ... ,ASTM,JIS,AISI,DIN,EN,SUS etc.5.Stianless steel square bar is widely applied for petroleum,chemical,mechanical and electrical ... strength after cold-drawn , anti-stress corrosion , good surface . chemcial composition according to international standards of ASTM , AISI , JIS , ER , ...