Applications of 3PE anti-corrosion steel pipes
Release time:
2022-03-22
3PE anti-corrosion steel pipes are designed for pipelines used in various working environments. To slow down or prevent corrosion and degradation of pipelines caused by chemical and electrochemical reactions from external media or the metabolic activities of microorganisms, two or three layers of polyethylene are applied to the outer surface of the pipeline, thereby extending the service life of 3PE anti-corrosion pipes by a factor of 3 to 5. The coating consists of: an inner layer of fused epoxy; an intermediate layer of adhesive; and an outer layer of extruded polyethylene. The total thickness of the protective layer is approximately 1.8 to 3.7 millimeters.
3PE anti-corrosion steel pipe The pipeline is designed for use in various working environments. To slow down or prevent corrosion and degradation of the pipeline caused by chemical and electrochemical reactions from external media or by microbial metabolic activities, two- or three-layer polyethylene coatings are applied to the outer wall of the pipeline, providing corrosion protection. As a result, the service life of 3PE-coated pipelines is extended by a factor of 3 to 5. The coating consists of: an inner layer of fused epoxy; an intermediate layer of adhesive; and an outer layer of extruded polyethylene. The total thickness of the protective layer ranges from approximately 1.8 to 3.7 millimeters.
3PE anti-corrosion steel pipes boast excellent sealing performance, significantly saving energy and reducing costs over their long service life while also protecting the environment. They exhibit strong corrosion resistance; when construction is carried out strictly according to the prescribed procedures, their service life can reach 30 to 50 years. Additionally, these pipes demonstrate excellent low-temperature corrosion resistance and impact resistance, with PE exhibiting a low water absorption rate. They also benefit from high epoxy strength, low PE water absorption, and superior flexibility of the hot-melt adhesive, ensuring high reliability in corrosion prevention.
3PE anti-corrosion steel pipes boast advantages such as light weight, high strength, thermal insulation, sound insulation, flame retardancy, cold resistance, corrosion resistance, non-absorbency of water, and rapid installation. They have become indispensable materials in industries including construction, transportation, petroleum, chemical engineering, power generation, and refrigeration for thermal insulation, anti-corrosion, waterproofing, leak sealing, and sealing applications. 3PE anti-corrosion steel pipes are used in anti-corrosion and thermal insulation projects for both indoor and outdoor pipelines, heating pipelines, localized air-conditioning pipelines, and industrial pipelines in the chemical industry. As an excellent thermal insulation and anti-corrosion material, 3PE foam anti-corrosion pipes have seen rapid development, and their application scope continues to expand, finding widespread use in various pipelines such as those for heating, refrigeration, oil transportation, and steam transmission.
The substrate materials for 3PE anti-corrosion steel pipes include seamless steel pipes, spiral steel pipes, and straight-seam steel pipes. The three-layer polyethylene anti-corrosion coating has been widely adopted in the oil pipeline industry due to its excellent corrosion resistance, resistance to water vapor permeation, and mechanical properties. The anti-corrosion coating of 3PE anti-corrosion steel pipes plays a crucial role in determining the service life of buried pipelines—some remain corrosion-free for decades underground, while others start leaking within just a few years. This difference is attributable to the use of various external anti-corrosion coatings.
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