The coating used for water supply anti-corrosion coated steel pipes is modified epoxy resin powder, which has good chemical corrosion resistance and can effectively solve difficult problems such as corrosion, rust, and scaling of similar pipeline products. Water supply anti-corrosion coated steel pipes can improve fluid transportation efficiency, effectively reduce wear and corrosion on the inner wall, and extend the service life of pipelines. So as to reduce the cost of pipelines.