The material of 3PE anti-corrosion steel pipe are seamless steel pipe, spiral steel pipe and straight seam steel pipe. The three-layer structure polyethylene (3PE) anti-corrosion coating has been widely used in the petroleum pipeline industry due to its good corrosion resistance, water vapor permeability and mechanical properties. 3PE anti-corrosion steel pipe and anti-corrosion layer are very important for the life of buried pipelines. Some pipelines of the same material are buried in the ground for decades without corrosion, and some leak in a few years. It is because they use different outer anti-corrosion coatings.

Anticorrosion form of steel pipe outer wall

3PE anti-corrosion generally consists of 3 layers:

One layer of epoxy powder (FBE> 100um)

Two-layer adhesive (AD) 170 ～ 250um

Three-layer polyethylene (PE) 1.8 ～ 3.7mm

In operation, mixed the three materials, they are firmly combined with the steel pipe to form an excellent anti-corrosion layer after processing. The processing methods are generally divided into two types: winding type and round die covering type.

3PE anti-corrosion steel pipe coating is (three-layer polyethylene anti-corrosion coating), which is a new type of anti-corrosion combination of European 2PE anti-corrosion layer and North American widely used epoxy powder anti-corrosion steel pipe coating (FBE) Steel pipe coating. It has been recognized and used all over the world for more than ten years.

The coating of 3PE anti-corrosion steel pipe is the epoxy powder anti-corrosion coating on the bottom layer and the surface of the steel pipe. The surface layer is a high-density polyethylene anti-corrosion coating.

Three-pe anti-corrosion coating combines the characteristics of high impermeability and high mechanical properties of epoxy resin and polyethylene material. So far, it is a globally recognized anti-corrosion coating for pipelines with good effect and good performance, which has been used in many projects.