... Stud Bolt, Pump ShaftMaterial Standard:GB, BS, ASTM, EN, DIN, AISI, JISForged shaft Material :Carbon steel, alloy steel, stainless steel,Supply ... ) Shaft Related Forgings 25CrMo4, 42CrMo4, 40CrNiMo, 34CrNi3Mo, 25Cr2Ni4MOV, 18CrNiMo5, 30CrMo, 4130, 4140. 5) Gear Related Forgings 35CrMo, 34CrMo4, 4137, 42CrMo, 4140 ... .Ultrasonic Test Sep1921 Class C/c Forged Shafts 42CrMo4+Q/T