The base material of 3PE anticorrosive steel pipe includes seamless steel pipe, spiral steel pipe and straight seam steel pipe. Three layer polyethylene (3PE) anticorrosive coating has been widely used in the oil pipeline industry for its good corrosion resistance, water vapor permeability resistance and mechanical properties. 3PE anti-corrosion steel pipe anti-corrosion coating is very important for the service life of buried pipelines. Some pipelines of the same material are buried in the ground for decades without corrosion, and some are leaked in a few years. It’s because they use different coating.
3PE anticorrosion is generally composed of three layers of structure:
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