The branch table is also called the branch pipe seat, saddle and saddle type pipe joint. Mainly used for pipe reinforcement pipe connection, instead of using different diameter three, reinforcing plate, strengthening pipe etc. branch connection type, which has the advantages of safety, lower cost, simple construction, improve the media channel, series of standardization, has the advantages of convenient use, especially in high temperature, high pressure, large diameter and thick the wall pipe is widely used, instead of the traditional branch connection method.