Flanges are components used to connect pipes, valves, pumps, and various other equipment (assemblies) that make up a piping system. In addition, they facilitate cleaning, inspection, and modification.

Forged steel flanges and various forgings are manufactured in accordance with national and industry standards. The flange standards include: American standards (ASME), European standards (EN), German standards (DIN), Japanese standards (JIS), chemical industry standards (HG), and petrochemical industry standards (SH).