... , AISI 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 material ... our best service. If it is possible, welcome to our factory. forging steel round bar