Profile: Jignesh Steel is a manufacturer & exporter of pipes, tubes, and fittings. We are an ISO 9001:2000 certified company. We offer a wide range of pipes, tubes, sheets, plates, coils and strips, butt weld fittings, forged fittings, flanges, bars & wires, fasteners & refractory anchors along with welded pipe fittings, steel tube fittings, seamless pipe fittings, and stainless steel tube fittings. The entire range of welded pipe fittings & tubular components are supplied to various industries that include oil refineries, chemical plants, fertilizer plants, and petrochemical plants. The weld neck flange derives its name from the neck portion of the flange that is welded to the end of a piping system. Weld neck flanges have a long tapered hub, and are often used for high pressure applications. They are designed to transfer stress to the pipe, thereby reducing high stress concentrations at the base of the flange. Long weld neck raised face (LWNRF) 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.