3PE anti-corrosion steel sleeve steel buried steam insulation pipeline is a new type of laying and processing technology for underground buried pipelines, which can be directly buried underground without the need for reinforced concrete. The working steel pipe of 3PE anti-corrosion steel sleeve steel buried steam insulation pipeline is seamless steel pipe, and thermal deformation is carried out inside the outer protective pipe. This not only reduces the cost of raw materials, but also shortens the construction date, and ensures the stability of the heating network.