3PE Anti-corrosion Pipe Manufacturing Process

The base material of 3PE anti-corrosion steel pipe includes seamless steel pipe, spiral steel pipe and straight seam steel pipe. The three-layer polyethylene (3PE) anti-corrosion coating has been widely used in the oil pipeline industry due to its good corrosion resistance, water vapor resistance and mechanical properties. The anti-corrosion layer of 3PE anti-corrosion steel pipe is very important to the life of buried pipelines. Some pipelines of the same material will not corrode after being buried underground for decades, and some will leak within a few years. It is because they use different outer anti-corrosion layers.

3PE anti-corrosion generally consists of 3 layers of structure:

The first layer of epoxy powder (FBE>100um)

The second layer of adhesive (AD) 170～250um

The third layer of polyethylene (PE) 2.5 ~ 3.7mm

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

3PE anti-corrosion steel pipe coating (three-layer polyethylene anti-corrosion coating) is a new anti-corrosion coating produced by cleverly combining the European 2PE anti-corrosion coating and the epoxy powder anti-corrosion steel coating (FBE) widely used in North America. Steel pipe coating. It has been recognized and used all over the world for more than ten years.

The coating of the 3PE anti-corrosion steel pipe is epoxy powder anti-corrosion coating that is in contact with the bottom layer and the steel pipe surface, and the middle layer is a copolymerized adhesive with branched functional groups. The surface layer is high-density polyethylene anti-corrosion coating.

3pe anti-corrosion coating combines the high impermeability and high mechanical properties of epoxy resin and polyethylene materials. So far, it is recognized globally as the pipeline anti-corrosion coating with the best effect and performance, so it has been applied in many projects.