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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
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