... Steel Type: Welding Flange Flanges: (1) Flanges Type: Plate Flange, Flat Flange, Slip on Flange, Welding Neck Flange, Long Welding Neck Flange, ... Blind Flange, Socket Welding Flange, Thread Flange, ... F12, F22, F91 (4) Connection Type: Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female ...