At present, the manufacturing process of titanium pipe fittings on the market has been basically mature, but the use of titanium pipe has been restricted by the cost, especially for the thin-wall pipe, high strength pipe, long pipe and other specific requirements, the production of titanium seamless pipe is more difficult, complex equipment, long cycle, low yield. So, titanium welded pipe fittings came into being.

Titanium tubing is not corrosion-free in the environment. The titanium pipe fitting manufacturer found that the internal and external surfaces of pure titanium condenser tubes had severe corrosion perforation and edge rupture after 15 years. In addition, in the assembly and application process of titanium pipe, it is often necessary to bend, weld, end processing and so on. Due to the high flexure ratio of titanium pipe fittings, it is obvious to spring back during bending. Excessive springback makes it difficult to control the geometry and accuracy of the pipe.

In the process of pipe processing, pass deformation significantly affects the properties of pipe. Large deformation can not only improve the production efficiency and the purpose can be better to break the coarse as-cast structure, so that the pipe grain fine and uniform, but the general assembly will increase the pipe forming resistance, the deformation heat leads to local temperature rise, so that the deformation is not uniform, the grain abnormal growth. Reasonable deformation can form the texture in the radial, axial and circumferential direction of the pipe, thus improving the performance.