3PE Anti-corrosion Steel Pipe Production Details

3PE anti-corrosion steel pipe base materials include seamless steel pipes, spiral steel pipes, and straight seam steel pipes. 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 permeability resistance, and mechanical properties. The anti-corrosion layer of 3PE anti-corrosion steel pipes is crucial to the life of buried pipelines. Some pipelines of the same material will not corrode after being buried underground for decades, while others will leak within a few years. This is because they use different external anti-corrosion layers.

Three-layer polyethylene anti-corrosion is currently one of the main technical systems for external anti-corrosion of internal and external buried pipelines. It has good anti-corrosion properties, low water absorption, and high mechanical strength. In recent years, it has been increasingly widely used in buried water, gas, and oil pipelines.

3pe anti-corrosion steel pipes have one more layer of epoxy powder than 2pe anti-corrosion steel pipes. Epoxy powder has good corrosion resistance, good mechanical properties, and strong resistance to cathodic stripping. Although it has the advantages of strict surface treatment, poor weather resistance, and high water absorption, it is suitable for buried pipelines and submarine pipelines. The coating thickness is only 0.3 to 0.5 mm, and its service life can reach 40 to 50 years.