1.ANSI B16.5 Carbon Steel Flange long neck flange 2. Dimension: 1/2"to 72 ... B16.5 Carbon Steel Flange long neck flange(1) Flanges Type: Plate Flange, Flat Flange, Slip on Flange, ... Welding Neck Flange, Long Welding Neck Flange, Blind Flange, ... F12, F22, F91(4) Connection Type: Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male- ...