Description
Long Neck Welding (abbreviated LWN) flanges are similar to a standard Welding Neck flange, but the “Neck” is considerably longer. This type is often used as a nozzle for a barrel or column. In addition, there are the type LWN Heavy Barrel (HB) and the Equal LWN Barrel (E); they have a different shape and a thicker “Wall”.![Long Weld Neck Flange](http://img5.grofrom.com/www.dingsheng-pipe.com/flanges-pipefittings/Long-Weld-Neck-Flange.jpg)