... Field, Offshore, Gasoline, Water Systerm,etc 3.Reliable Quality ANSI Carbon Steel FlangeForm:Socket Weld,Slip on,Blind,Lapped,Screwed,Weld ... B16.47, MSS SP44, ANSI B16.36, ANSI B16.48, API 605, AWWA AND DRAWING Metrial:· CSStandard: ASTM / ASME A/SA ... :0086-20-31175628Fax:0086-20-31175318 Certificate: Our Products: ANSI Carbon Steel Flange