Stainless steel pipe fittings are a type of fitting, made from stainless steel material, hence the name. They include: stainless steel elbows, tees, crosses, reducers, and caps. According to the connection method, they can be divided into four categories: socket-weld stainless steel fittings, threaded stainless steel fittings, flanged stainless steel fittings, and welded stainless steel fittings. Stainless steel elbows are used in pipe bending areas; flanges are used for connecting pipes together, attached to the pipe ends. Stainless steel tees are used where three pipes converge; stainless steel crosses are used where four pipes converge; stainless steel reducers are used where pipes of different diameters are connected. Main stainless steel grades: 304, 304L, 316, 316L.