316 stainless steel pipe fittings contain: stainless steel elbow, stainless steel tee, stainless steel four-way, stainless steel reducer, stainless steel pipe cap, etc., according to the coupling method can be divided into socket stainless steel pipe fittings, threaded stainless steel pipe fittings, flange stainless steel pipe fittings and welding stainless steel pipe fittings four categories. Stainless steel elbow is used where the pipe fittings turn; flange is used to make the pipe and tube interconnected parts, connected at the end of the pipe, stainless steel tee tube used for three pipe collection; stainless steel four-way tube used for four pipe collection; stainless steel reducer tube used for different pipe diameter of the two pipe coupling place.