Fittings are used in 3 major types: welding fittings (pipe fittings), compression fittings,...
Welding Fittings can be produced from wrought or forged materials. Mostly designed and shaped in accordance with American standard ASME-ANSI or British Standard BS.
ASME B16.1, ASME B16.9, ASME B16.11, ASME B16.12
