... flange;SO slip on flange; Plate flange;Blind flange; Threaded flange;SW socket welding flange;lapped flange;stub end flange, LWN long welding neck flange,Orifice flange;Reducing flange; API flange;Compact flange ... tube sheet, Bleed ring, square flange, girth flange, hub flange, API flange 3. Face RF(raised face);FF( ... API 6BX ,BS4504, ANSI B16.36 (orifice flange), DIN EN1092-1, BS3293 (26’’~48’’), API ...