1,All sizes of forged steel cylinder. 2,Carbon steel,alloy steel 3,Produced as per your ... , sleeves, rings, flange, steel cylinders, crankshafts, blocks and isoforms. 1, Forging Parts Material: High Strength Alloy Steel or Carbon Steel2 ... , Forging Parts Process: Ingot-Forging-Rough Machining-Heat Treatment-Mechanical testing-Final Machining-Wire ...