Stainless steel socket fittings are a type of socket fittings, which are pipe connection components machined from stainless steel round bars or ingots after forging.

Its connection form is Socket Welding-SW, where steel pipes are inserted into socket holes for welding. The main manufacturing standards are ANSI/ASME B16.11, HG/T 21634, MSS SP-83, MSS SP 79, and GB/T 14383-2008.

The types of stainless steel socket and spigot fittings include 45° elbows, 90° elbows, tees, crosses, 45° reducing tees, double socket ferrules, single socket ferrules, pipe caps, swivel joints, and branch supports. Among them, tees and crosses come in both equal and unequal diameters; similarly, double socket ferrules also have equal and unequal diameters, with the unequal ones further classified into concentric and eccentric types.