The coating of 3PE anti-corrosion steel pipes consists of an epoxy powder anti-corrosion coating in contact with the steel pipe surface as the base layer, a middle layer of copolymer adhesive with branching structural groups, and a surface layer of high-density polyethylene anti-corrosion coating. The 3PE anti-corrosion steel pipe coating, also known as the three-layer polyethylene anti-corrosion coating, is a new type of anti-corrosion steel pipe coating that ingeniously combines Europe's 2PE anti-corrosion layer with the widely used FBE (Fusion Bonded Epoxy) anti-corrosion coating in North America. It has been recognized and used globally for over a decade.

3PE Coating Steel Pipe Inspection Process

Firstly, inspect the anti-corrosion steel pipes, conduct a comprehensive examination based on various conditions to ensure they meet the requirements for producing insulated steel pipes. Check for corrosion on the pipes and remove any rust. Next, place the de-rusted and anti-corrosion steel pipes inside a polyethylene sleeve and form them through pipe insertion. Then, after heading and repairing, inject polyurethane foam inside to fully fill the gaps, ensuring complete filling. Inspect the anti-corrosion steel pipes and carry out a final product inspection on the completed insulated steel pipes.