Petroleum pipeline coated with alloy coat

The utility model belongs to the plating field of metallic material, which relates to a petroleum pipeline coated with alloy for drilling, extracting, collecting and delivering petroleum in petroleum industry. The utility model comprises pipe ends, a pipe body and a coupling, wherein the inner wall of the pipe body is coated with a layer of inner wall leak layer, and the surface of the outer wall of the pipe body is orderly coated with outer wall coating layers. The surface of the inner wall leak layer is orderly coated with inner wall alloy leak layers. The utility model reinforces mechanical performance, such as intensity, rigidity, etc. and has the advantages of high temperature resistance, high pressure resistance, high bacterium resistance, high mineralization resistance, high corrosion resistance and strong suspension loading capability. The utility model can carry out coating processing with a single function or multiple functions according to needs. The utility model also has the advantages of low cost, long service life, economy and practicability. The utility model is suitable for protection processing for various petroleum pipes, sleeve pipes and pipelines which are used for delivering gas, water and oil, injecting the water, extracting the oil, cementing a well, drilling the well, etc. and used for gathering, heating, a boiler, etc. in an oil field.