Copper Coupling is composed of a socket, a socket, a bending part, a socket slot, etc., and it is characterized in that there is a socket slot in the socket, and the socket and socket are respectively located at both ends of the curved part; Compared with the prior art, the design is reasonable, the operation is simple, the practicability is strong, and the operation quality and convenience are improved.Socket Welding Coupling can be widely used in pipes of different diameters, including single-way, three-way, four-way, etc., and can also be used for water meters and valves. Due to the use of socket structure, the pipe joint reduces the cost, installation, use,maintenance is very convenient, and at the same time has a very high leakage prevention ability, which has a great market prospect.