The surface of the aluminum-galvanized steel pipe has hot-dip or galvanized welded steel pipes. Galvanizing can improve the corrosion resistance of steel pipes and prolong their service life. In addition to being used as a pipeline for transporting general low-pressure fluids such as water, gas, and oil, it is also used as a pipeline for the petroleum industry. Oil well pipes, oil pipelines, oil heaters, condensate coolers, coal distillation and washing oil exchanger pipes, trestle pipe piles, mine tunnel support frame pipes and so on in offshore oil fields.