... Overlaying welding/the welding flanges Blind Flanges:(1) Flanges Type: Plate-type Flat Welding Flange, Butt Welding Ring Loose Flange, ... Flange, Socket Welding Flange, Thread Flange, Screwed Flange, Lap Joint Flange(2) Flanges Standards: ANSI Flanges, BS flanges, DIN ... F11, F12, F22, F91(4) Connection Type: Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female ...