The inner and outer materials of the stainless steel-lined composite pipe not only enhance the pipe strength and ensure the performance of the stainless steel inner wall but also effectively reduce manufacturing costs. The installation cost is significantly lower than that of thick-walled stainless steel pipes and thick-walled copper pipes. At the same time, since the fluid does not come into contact with the outer steel pipe during actual use and only touches the stainless steel inner wall, the stainless steel-lined composite pipe can replace pure stainless steel pipes for transporting purified drinking water.

         In summary, the stainless steel-lined composite pipe combines the advantages of stainless steel and galvanized pipes while overcoming their drawbacks. Its price is much lower than that of stainless steel pipes. It is a new type of pipe with a reasonable structure, excellent corrosion resistance, high transportation efficiency, long service life, economic and environmental benefits, and a wide range of applications. It not only prevents secondary water pollution but also significantly reduces costs. The pipe can be connected via threading, welding, flanges, grooving, and other methods. This invention offers excellent sealing effects and effectively overcomes the shortcomings of galvanized steel pipes, which are prone to corrosion, and the issues of plastic pipes aging due to thermal fusion connections. It is a new environmentally friendly product that can effectively replace other pipes in the market.