... requirment;Other specification:Carbon Steel:C45, CK35,C60, C22Alloy Steel: 42CrMo4, 34CrNiMo6,39CrNiMo3,18CrNiMo5,17CrNiMo6,41Cr4,S355J2G3,ST52-3,16MnCr5,20MnCr5 ... ,21CrNiMo2. ST52-3,ASTM A105,42CrMo4,S355J2G3,20NiCrMo2,16MnCr5,20MnCr5,34CrNiMo6,18CrNiMo7-6,39CrNiMo3, 17CrNiMo6,21CrMoV511 ...