A flange is a ridge or rim that projects outward to improve strength or weight distribution. To form a pipeline system, flanges connect valves, pumps, pipes, and other pieces of equipment. It also allows for simple washing, inspection, and modification. Welding or screwing are used to connect flanges. Bolting two Flanges together and sealing the joint with a gasket is how flanged couplings are made.
When a piping junction needs to be removed, flanges are used. Machines, valves, and specialised applications are all places where these can be found. Breakout Flanges are installed at regular intervals on many pipelines where maintenance is required. The three separate but interconnected components of a flanged joint are flanges, gaskets, and bolts. Special controls must be applied in the selection and application of all of these components to produce a leak-proof joint.
A variety of materials are used to make flanges.
Flanges for pipes come in a variety of materials and grades. Flanges are available in a wide range of materials. The most commonly used materials for Pipe Flange production are Carbon Steel, High Yield Carbon Steel, Alloy Steel, Stainless Steel, Duplex and Super Duplex, and various Nickel Alloy Grades such as Monel, Inconel, Hastelloy, and Incoloy.
Source- Hastelloy c22 Flanges Supplier