... body etc Material: Stainless steel, duplex, nickel alloys, etc. Butterfly valve body1. Meterial: stainless steel 316L, CF3M2. Process: investment ... invested enterprise---Zhejiang Shidai Casting Co., Ltd, Shanghai Kefeng Alloy Casting Co., Ltd and Wenzhou Keding Machinery Manufacture Co., ... steel (CF8, CF3, CF8M, CF3M etc.), dual phase steel, alloy cast steel, stainless steel (LCA, LCB, LCC, CA6NM etc.), ...