... :2008 carbon steel /alloy Flat Slip-on Bind /Toruseal Flange Varieties: threaded flange, slip-on flange (SO), socket welding flange ... , lap joint flange (LJF), welding neck flange (WNF), blind flange, orifice flange, reducing flange, pad ... type flange, loose hubbed flange, welding plate flange, welding neck collar, welding-on collar, loose ...