... steel, alloy steel Process: Forged Basic parameters of forged brake disc: Material GB/T 307742CrMoMaterial recheckMeet with the GB ... oil ,Protecting package General informations: Name: Carbon steel forged brake discProcess: Forged Leading products: Forging pieces, such as many ... types of shafts, different kinds of flanges, gear rings, brake discs , roller ,tubular parts, and other forging parts. ...