With the development of China's industrial technology and the introduction of new technologies, the corrosion of pipelines is a very serious destructive factor affecting the development of modern industry. Besides normal production, the pipeline corrosion of industrial, mining and chemical enterprises also reduces product quality, pollutes the environment, wastes energy and improves the probability of potential safety hazards The long-term existence has seriously hindered the progress of China's industrialization. Therefore, it is imperative for the appearance of titanium welded pipe with the characteristics of corrosion resistance, high strength, wear resistance, low cost, low pollution and easy maintenance.

Titanium and titanium alloy welded pipe (hereinafter referred to as "titanium welded pipe") has high strength, light weight, good heat transfer and corrosion resistance. As an alternative product of steel and stainless steel pipe, it emerged at the historic moment. The use of large-diameter titanium welded pipe in industrial transmission pipeline has also been recognized by the market. Although the investment cost of the titanium welded pipe is higher than that of the common liquid transportation pipe, its cost is about 15% - 25% lower than that of the titanium seamless pipe. Based on the analysis of the service life and maintenance cycle of the titanium welded pipe, the investment cost of the titanium welded pipe can be compensated in use. The use of the titanium welded pipe in the pipeline system can reduce the number of regular maintenance, reduce the production stop time, improve the product quality and improve the product quality Pipe life to reduce production costs.

Today, titanium has been widely used in chemical, petroleum, petrochemical, vacuum salt, pharmaceutical, desalination, power and other industries. Especially titanium can resist the corrosion of chloride ions, so titanium materials are widely used in chlorine related media, such as ion-exchange membrane caustic soda production. There are also formic acid, acetic acid, propylene oxide and other chemical projects are using titanium pipeline transportation media to solve the problem of pipeline corrosion and extend the service life of the pipeline.