Certificate:DNV, ISO9001,API ,AZ ,CE Material:WCB ,PTFE Supplier of CNOOC,SINOPEC,CNPC,China national aviatio fuel,etc. - ... -196-550°CDesign reference GB,API,ASME Face to face Flange connection/Welded connection Ball r ModelQ41FCertificateDNV ISO9001:2000, CE ,API ...