Corrosion-resistant high-frequency welded steel pipe

The utility model discloses a corrosion-resistant high-frequency welded steel pipe. Steel pipe, a protective layer is annularly arranged on the outer wall of the steel pipe and comprises a wear-resisting layer, a corrosion-resisting layer and a high-temperature-resisting layer, a self-cleaning layer is arranged on the inner wall of the steel pipe, an inserting block is fixedly connected to the topend of the steel pipe, external threads are annularly arranged on the surface of the inserting block, an inserting groove is formed in the steel pipe close to the bottom end, and internal threads arearranged inside the inserting groove. The utility model has a novel design, the steel pipe is simple in structure, convenient to operate and good in using effect, the protective layer is arranged outside the steel pipe and comprises the abrasion-resistant layer, the corrosion-resistant layer and the high-temperature-resistant layer, corrosion prevention and abrasion prevention protection are conducted on the outer wall of