... ,Technical:Hot-rolled 2,Standard:GB High Quality 42CrMo Alloy Structure Steel 1,The advantage of Alloy Structure Steel is the strength of ... reduce the weight of the structure, and so on.2,Alloy steel structure of the specifications and parameters ... GB3077 40Mn2GB3077 50Mn2GB3077 50Mn2VWYJ011-2001 25Cr1MnSiAGB3077 35Cr2MnSiAGB3077 3High Quality,competitive price,pls contact us for further information if ...