resilient seated butterfly valves suppliers in china
resilient seated butterfly valves suppliers in china Material:
Body: 1).Cast iron  ASTM A 126 CL.B/GG25
        2). Ductile iron  ASTM A 536 65-45-12/GGG40 
      3). Stainless steel ASTM A 351 CF8 CF8M 
        4). Carbon steel ASTM A216 WCB 
Disc:  1).Ductile iron  ASTM A 536 65-45-12/ GGG40 
       2). Stainless steel ASTM A 351 CF8 CF8M 
       3). Carbon steel ASTM A 216 WCB 
       4). Bronze  ASTM B 148 C 954 
       5). Coated  NYLON/PTFE