... (3 sets), heat treatment, advanced testing machine2)process 3) materialstainless steel , carbon steel , alloy steel20CrMoTi, 34CrMo, 42CrMo, 20NiCrMo, 35CrMo, 40CrMnMo,4)standardASTM ... OEM or as the drawings. 20ton die forging hammer produce line