Socket welding is a way of pipeline connection, English: Socket Weld is also a common connection method in pipeline connection.

As the name implies, the pipe is inserted into the end position of the other end and welded. This connection method uses a fillet weld.
Application fields: generally used in the petrochemical industry, and other fields such as steel, electric power, ships and so on.
Mainly the accessories are directly processed into sockets, such as: socket valves, socket elbows, socket flanges, socket tees, socket clamps and other pipe fittings.

In the end, it is convenient for other equipment to use after the pipe is connected to it.
Socket welding is mainly used for small-diameter pipelines. The maximum in the standard is DN100 (4″), and most of them are below DN50 (2″). DN65, DN80, and DN100 are also used, but generally less, because their cost will be higher than Butt welding accessories have increased a lot. Butt welding will increase the difficulty of welding when fittings below DN50 are connected to pipelines, and it is not as convenient as socket welding (butt welding must be selected for occasions with higher requirements for use). The non-destructive testing method of socket welding is magnetic particle MT or penetration PT.
Advantages of the socket welding connection method: the pipe does not need to be grooved, and there will be no phenomenon of pipe butt edge after welding.