... -type Flat Welding Flange, Butt Welding Ring Loose Flange, Slip on Neck Flange, Welding Neck Flange, Long Welding Neck Flange, Blind Flange, Socket Welding Flange, Thread ... , F12, F22, F91(4) Connection Type: Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male ...