Metal pipeline is an important carrier for continuous and rapid transportation of marine resources such as gas, oil and ore. In the complex and harsh marine environment, the inner and outer walls of the metal pipeline have to withstand the coupling operating conditions of chemical corrosion and physical friction brought by the seawater environment and substances transported, leading to the damage and failure of the pipeline. This seriously shortens the service life of the metal pipeline in the marine environment. Surface coating for the metal pipeline is a direct and effective treatment to modify and strengthen the workpiece, and therefore support it work safely and stably with extended service life. Thus, the development of high-performance protective coatings for metal pipeline adapted to the harsh marine service environment has both significant economic and social values.