... be joined tightly together, by means of threaded bolts, wedges, clamps, or other means of applying high compressive forces.[16] Often ... flange, gas flange, oil flange, steel flanges, oil pipe flange, Slip-On welded flange, SO flange, RF SO flange, Welded Neck Flange, Welded-Neck Flange, WN flange, WN RF flange, WNF flange ...