... casting/cast iron knife gate valve body Standard:DIN,ASTM,JIS etc. OEM service offered certificate of ISO 9001 Qingdao Benor ... ....) Especially we are most professional on gate valve and knife valve castings.Name: cast iron knife gate valve body 1) Material: gray iron, ... pressure, medium pressure, high pressure6) Manufacture standards: API/ANSI, BS4504, JIS, MSS, ISO, EN, DIN, NF 7) Machining: lathe, ...