The forming process of the Cold Forming Tee Machine is to use the special elbow forming machine to put the tube billet into the external die. After the upper and lower die are closed, the tube billet moves along the gap reserved by the internal die and the external die to complete the forming process. The principle of cold extrusion elbow pushing is very simple. The forming process of cold extrusion elbow is to use the special elbow forming machine to put the tube billet into the external die. After the upper and lower die are closed, the tube billet moves along the gap reserved by the internal die and the external die under the push of the push rod to complete the forming process. It is by an ox horn shaped core head or mandrel into the mold, the pipe fitting into the mold, the mold to have two half arc, one up and one down, in the process of pushing is a process along the mandrel bending. There is support at the back. Put the feeding pipe section into the mandrel, and there is an archway rack at the back to secure the mandrel. The center is equipped with hydraulic jack device, which is pushed forward by hydraulic transmission. Push the pipe along the half-circle groove of the mold and follow the mandrel until the top column reaches the end position, the limit switch is locked and dies, and then push the pipe down to finish one. The outer diameter after shaping has reached the size requirement of the products. The wall thickness is controlled by the wall thickness of the incoming material. In the process of pushing, the wall thickness should not be changed under normal circumstances, but if due to the cause of things, some places will produce wall reduction signs, to be the same as the usual material, wall thickness to add some margin, to prevent in the push system due to local thickness reduction and error. The outside diameter and wall thickness of the elbow have reached the requirements. The following finishing process, after blasting treatment, the elbow of the internal and external surface of the iron oxide removal, the two ends of the groove treatment in order to facilitate welding. After checking, making steel word, painting, packaging and other processes, can be put into storage, and then leave the factory.