TPEP anti-corrosion spiral welded pipeIt refers to steel pipelines that have undergone anti-corrosion processing, which can effectively prevent or slow down the occurrence of chemical or electrochemical reactions and corrosion during transportation and use. According to statistical data in China, the direct economic losses caused by steel pipe corrosion in the country are over 280 billion yuan per year, and currently the global annual losses due to steel pipe corrosion are as high as 500 billion US dollars. Anti corrosion spiral steel pipes can effectively prevent or slow down corrosion, extend the service life of steel pipes, and reduce the operating costs of steel pipes.

The outer wall adopts a three-layer structure of anti-corrosion coating formed by hot melt bonding and winding technology, with the bottom layer of epoxy resin, the middle layer of adhesive, and the outer layer of polyethylene. The inner wall adopts a thermal spray epoxy powder anti-corrosion method, which uniformly applies the powder to the surface of the pipe body after high-temperature heating and fusion, forming a steel plastic composite layer, greatly improving the adhesion and thickness of the coating, enhancing its resistance to collision and corrosion.

TPEP performance characteristics:

The TPEP anti-corrosion process (inner EP and outer 3PE) for large-diameter water pipeline industry combines thermosetting epoxy resin powder coating with the characteristics of polyethylene and processing technology. The three-layer structure polyethylene coating and fusion bonded epoxy powder coating technology are cleverly combined to provide an excellent solution for corrosion protection of buried steel pipes. The fusion bonded epoxy resin powder (FBE) anti-corrosion of the inner wall solves the internal anti-corrosion problem of the pipeline industry, with low roughness, smooth inner wall, and good hydraulic performance. Through the analysis of design examples, it is concluded that compared with pipes of the same diameter, the use of inner wall fusion bonded epoxy coating can reduce pipeline losses by more than 30%; Under the same flow rate, the pipe diameter can be reduced by one level, thereby reducing costs and energy consumption.