... : Grey iron, stainless steel, rubber 2) Material: S17CrNiMo6, 34CrNiMo6, 17Cr2Ni2Mo, 20CrNi2Mo, 4340, 4140, 35-42CrMo, MC NYLON rubber, etc. 3) Process: Precision casting ... , investment casting, die casting, permanent mould casting, forging, hobbing Inner packing: Plastic pouch, box Outer ...