The anti-corrosion steel pipe with inner EP epoxy and outer PE coating is mainly made of spiral welded steel pipes, which are heated internally and externally. The outer wall of the steel pipe is hot-dip coated with polyethylene particles, and then a layer of EP epoxy resin is coated on the inner wall of the steel pipe. The anti-corrosion steel pipe with inner EP epoxy and outer PE coating is used for water supply and drainage pipelines, which can transport various water qualities and is mainly used in the construction of underground pipeline networks. Due to the excellent anti-corrosion effec