... 40Cr etcalloy steel:42CrMo,35CrMo,9cr2V, 42CrMo4,70Mn and so on2. description: 1Diameter200-2000mm2Weight1-30Ton3PackingBarrel with wooden ... forged+Normalizing+Rough Machined+heat treatment(quenching and tempering)+Finish Machined6 StandardDIN,ANSI/ASME,BS,GB,JIS, ... non-standard7 Inspectionchecked and tested through every working procedure and ...