4340 alloy steel bar 1.Grade:200,300,400 series 2.Size: 5mm* ... -260*260mm 3.Surface: cold draw,pickled ,polished etc stainless steel square bar 1.Grade:ss201,202,301,302,303,304 ,304l ... :GB,ASTM,JIS,AISI,DIN,EN,SUS etc.5.Stianless steel square bar is widely applied for petroleum,chemical,mechanical and electrical ...