During the use of spiral steel pipes (ssaw), anti-corrosion treatment is often required to prolong the service life and reduce maintenance costs. The following are some common anticorrosion methods for spiral steel pipes:
3PE anti-corrosion: 3PE anti-corrosion refers to the coating of three layers of polyethylene material on the surface of the steel pipe, which is divided into three layers of inner layer polyethylene (HDPE), intermediate binder and outer layer polyethylene (MDPE). 3PE anti-corrosion has excellent waterproof, moisture-proof and anti-corrosion properties, and is suitable for underground pipelines, oil and gas pipelines and other projects.
2PE anti-corrosion: 2PE anti-corrosion refers to the coating of two layers of polyethylene materials on the surface of steel pipes, including inner polyethylene (HDPE) and outer polyethylene (MDPE). 2PE anti-corrosion has good waterproof, moisture-proof and anti-corrosion properties, but compared with 3PE anti-corrosion, its corrosion resistance is slightly inferior.
Epoxy coal tar pitch anticorrosion: Epoxy coal tar pitch anticorrosion coating has good weather resistance, wear resistance, and chemical corrosion resistance, and can be used for anticorrosion treatment of steel pipes. Epoxy coal tar pitch is suitable for water pipes, oil pipes, city gas pipes and other fields.
Epoxy powder anticorrosion: Epoxy powder coating is based on epoxy resin, which has good adhesion, weather resistance and chemical corrosion resistance. Epoxy powder anticorrosion is commonly used in water pipelines, oil pipelines, chemical pipelines and other fields.
Steel pipe zinc coating anti-corrosion: Steel pipe zinc coating anti-corrosion is to form a layer of zinc layer on the surface of steel pipe through hot-dip galvanizing or electro-galvanizing process, which plays the role of anti-corrosion. The zinc layer has good corrosion resistance and adhesion, and is suitable for water pipes, gas pipes, building structures and other fields.
Glass flake anti-corrosion: Glass flake anti-corrosion coating contains a large amount of glass flakes, which has excellent weather resistance, abrasion resistance and chemical corrosion resistance. During the coating process of the glass flake anti-corrosion coating, the glass flakes will form a dense protective layer, which can effectively block the intrusion of moisture and chemical substances, thereby prolonging the service life of the steel pipe. Glass flake anticorrosion is suitable for anticorrosion projects in harsh environments such as water pipelines, oil pipelines, chemical pipelines, and offshore platforms.
Polyurethane anticorrosion: Polyurethane coatings have excellent weather resistance, abrasion resistance, chemical corrosion resistance and good adhesion. The polyurethane anti-corrosion coating can effectively prevent the intrusion of moisture, oxygen and chemical substances, and prolong the service life of the steel pipe. Polyurethane anticorrosion is often used in offshore oil pipelines, long-distance natural gas pipelines and other fields.
Polypropylene anticorrosion: Polypropylene anticorrosion coatings have good weather resistance, abrasion resistance, chemical corrosion resistance and adhesion. Polypropylene anti-corrosion coating can effectively resist the intrusion of moisture, oxygen and chemical substances, and prolong the service life of steel pipes. Polypropylene anticorrosion is suitable for water pipelines, oil pipelines, chemical pipelines and other fields.
Various anti-corrosion methods have different performance and scope of application. Therefore, when selecting an anti-corrosion method, it is necessary to make a reasonable choice according to the specific use environment and purpose of the steel pipe. At the same time, factors such as the cost of anti-corrosion materials and construction difficulty must be fully considered to ensure the durability and reliability of the anti-corrosion effect.