We are manufacturing Long Weld Neck Raised Face (LWNRF) Flanges that are used as nozzle for a column or barrel. These are generally compared with a standard Welding Neck Flange, however their "neck" is quite longer. Their designs and sizes are in line with the international standards. Further, they have good compatibility with other brands of flanges and so these can be used along with any other flange. It has an aluminum clamp and one fastener to ensure its dis-assembly without using any tool. Its selection criteria are nominal pipe size, outside diameter, O.D of raised face, hub diameter of bevel, diameter of bore, thickness of flange and length through hub.