Weld Neck Flanges Manufacturers

Weld neck flanges are the most common type of flange used for high pressure applications. They are recognized by their long tapered hub. The hub provides an important reinforcement to the flange itself and acts to reduce rotation of the flange at bolt-up. The smooth transition between the flange and the hub combined with the strength of the butt weld joint, allows the flange to be used in extreme conditions of cyclic loading, bending and temperature fluctuations. They are characterized by its smooth hub transition from flange to weld end. They are referred to as high-hub flange designed to reduce high-stress concentrations at the base of the flange by transferring stress to the adjoining pipe. They are normally used in severe service applications involving high pressures, high temperatures or sub-zero conditions.