Stainless steel Socket Welding Coupling are pipe fittings that use a socket weld only on one end.Socket Welding Coupling are fittings used to connect two pipes in a piping system. Socket Welding Coupling can be connected using threads or socket welds. If both ends of a pipe fitting use socket welds or threads, it is called a full coupling.Socket Welding Coupling is a kind of pipe connector, which is made of round steel or steel ingot after forging and machining.Socket Welding Coupling has equal diameter and different diameter. Different diameter double coupling also includes concentric and eccentric. They can be widely used in pipes of different diameters, and can be used for water meters and valves. Due to the use of socket structure, the pipe joint reduces thecost, is extremely convenient to install, use and maintain, and also has good leak-proof ability.