... , Offshore, Gasoline, Water Systerm,etc 3.Reliable Quality ANSI Carbon Steel FlangeForm:Socket Weld,Slip on,Blind,Lapped,Screwed,Weld Neck ... , F11, F12, F22, F5, F9, F91.· Nickel AlloyStandard: ASTM / ASME SB 564 / 160 / 472Grade: UNS 2200 (NICKEL 200), UNS 4400 (MONEL ... -20-31175628Fax:0086-20-31175318 Certificate: Our Products: ANSI Carbon Steel Flange