... by Sea Manufacturing Way: Forging Material: Carbon Steel Type: Welding Flange Flanges: (1) Flanges Type: Plate Flange, Flat Flange, Slip on Flange, ... F11, F12, F22, F91 (4) Connection Type: Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small ... Male-Female, Large Tongue & Groove, Small Tongue & Groove (5) Size: 1/ ...