Valve body: ball valve body, butterfly valve body, check valve body etc Material: Stainless steel, duplex, nickel alloys, etc. Butterfly valve body1. Meterial: stainless steel 316L, CF3M2. Process: investment casting3 ... , CA6NM etc.), nickel-base superalloy (K211, K214, K403, K416 etc.), titanium alloy, Hastelloy, Monel alloy, cobalt-base alloy, and Iron-base ...