3PE anti-corrosion technology is a advanced anti-corrosion technology, which was imported from aboard on late 90's in 20th century. Its whole name is sintering epoxy or extrusion molding PE structure protection layer. 3PE anti-corrosion technology combines the fine properties of two kinds of corrosion layers as epoxy coating and extrusion PE, it also combines the advantages as interface and chemical-proof feature of epoxy coating and mechanical protection feature of extrusion PE corrosion layer so as to improve their performance noticeably.

Its features: High mechanical strength, wear-proof, corrosion-resistant, heat-resistant, cold-resistant, apply to medium of 150 degree, adaptable on the cold zone. So 3PE anti-corrosion layer is an ideal external protection layer. According to the detection of the authority department, the underground pipes with 3PE anti-corrosion technology can be used for 50 years.