Certificate:DNV ISO9001 ,API, AZ,CE Materials:PTFE,Rubber Supplier of CNOOC,SINOPEC,CNPC,China national ... GB,API,ASME Face to face Flange connection/Welded connection Ball valve ModelQ47FCertificateDNV ISO9001:2000, CE ,API,LRQA,TSSuitable medium General type :Water ...