• Haji Iron & Steel Works

Flanges, Long Weldneck

Haji Iron & Steel Works offers Long Weldneck Flanges. These flanges are used primarily as outlets on pressure vessels and tanks. The bore is always the nominal size of the flanges, regardless of the nominal size of the flanges, regardless of the pressure rating, and the standard length is 9 inch or 12 inch.

A Flange allows two pipes to be mechanically connected together, or a pipe to be mechanically connected to a valve, tee, choke or other piece of equipment. The principle of a flange is to use a mechanical force (exerted by the bolts) to pre - load the gasket sufficiently so that when internal pressure (end cap force) is applied, there is enough contact stress between the flanges and gasket to maintain a seal. The Flange it self needs to be connected to the pipe. This is usually achieved by welding though threaded and other weldless connections also exist.