... 1035, AISI 1045, GrD( Q235), Gr50 ( Q 345)Alloy Steel: AISI 1053, AISI A387Cr.12, 20CrMo, AISI 4137, AISI ... 4140, AISI 4340, AISI 431, 20 CrMnMoStainless steel: ASTM 304, ASTM 304L, ASTM 316, ASTM 316LAny other ... test.6) Production Process:Any more information, please don't hesitate contact me. We will try our best to offer ... If it is possible, welcome to our factory. forging steel round bar