3lpe Coated Pipe

3LPE coated steel pipes are divided into ordinary grade, reinforced grade, and special reinforced grade. The base materials of 3lpe coated steel pipes 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 3lPE anti-corrosion steel pipe 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. It is because they use different external anti-corrosion layers.
Before the anti-corrosion treatment of the 3lPE coated steel pipe base material, the steel pipe entering the pipe inlet platform needs to be inspected and recorded, the outer surface of the steel pipe should be shot blasted to remove rust, and then the cleanliness and anchor pattern depth of the outer surface of the steel pipe should be checked to see if they meet the requirements. Requirements, those that do not meet the requirements are polished and repaired with a hand grinding wheel, wrapped with tape paper at the pipe end, dust treatment, medium frequency heating to the required temperature, epoxy powder spraying, adhesive extruder side wrapping, PE extruder side wrapping, The anti-corrosion pipes are water-cooled, qualified products are spray-marked, and the pipes are placed on the platform and stacked for shipment.

3lPE coated steel pipe refers to a 3-layer structure polyolefin coating (MAPEC) external anti-corrosion steel pipe, which is a commonly used anti-corrosion pipe. Others include IPN3pe, which generally refers to the anti-corrosion of the outer wall of steel pipes. The anti-corrosion form of the outer wall of anti-corrosion structural steel pipe 3PE anti-corrosion generally consists of a three-layer structure: one layer of epoxy powder (FBE>100um), the second layer of adhesive (AD) 170250um, the third layer of polyethylene (PE) 2.53.7mm. In actual operation, three types of The materials are mixed and integrated, and processed to firmly combine with the steel pipe to form an excellent anti-corrosion layer. Its processing methods are generally divided into two types: winding type and camphor wrapping type.

3LPE steel pipe coating, also known as (three-layer polyethylene coating), is a new anti-corrosion steel pipe coating produced by cleverly combining the 2PE anti-corrosion layer in Europe and the widely used epoxy powder anti-corrosion steel pipe coating (FBE) in North America. layer. It has been recognized and used around the world for more than ten years. The coating of 3lPE anti-corrosion steel pipe is that the bottom layer in contact with the steel pipe surface is an epoxy powder non-anti-corrosion coating, and the middle layer is a copolymer adhesive with branched structural 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 globally recognized as a pipeline anti-corrosion coating with good effectiveness and good performance, and has been used in many projects.