... -5t2,length no more than 5m3,mim dia over 150mmcylinder forging 1,min OD around 150mm2,weight of single piece between ... 5CrMnMo,40Cr,42CrMo,20Cr2Ni4,5CrNiMo,15CrNiMo,20CrNiMo,35CrMo,40CrNiMo,etc.(8),regularly,we accept processing on giving materials.(9),according to ... ' clear requirements we can render excellent heat treatment. alloy steel forging parts