As a key part of city gas transmission, the corrosion protection performance of pipelines is crucial. Among them, the three-layer polyethylene anti-corrosion spiral steel pipe for clad gas pipeline is widely used because of its excellent anti-corrosion performance and long life. This article will introduce in detail the characteristics, advantages, production process and application fields of three-layer polyethylene anticorrosive spiral steel pipe.
1. The characteristics of three-layer polyethylene anticorrosive spiral steel pipe.
The three-layer polyethylene anti-corrosion spiral steel pipe is composed of three parts: steel pipe, anti-corrosion layer and outer sheath. The anti-corrosion layer is made of high-quality polyethylene raw materials, and a tight protective layer is formed on the surface of the steel pipe through a special process, which has good corrosion resistance. The outer sheath is made of high-density polyethylene material, which plays a further role in protecting the steel pipe. The connection method of three-layer polyethylene anticorrosive spiral steel pipe adopts welded or flange connection, which is convenient for installation and maintenance.
Advantages of two- and three-layer polyethylene anticorrosive spiral steel pipes.
1.Strong anti-corrosion performance: The anti-corrosion layer of the three-layer polyethylene anti-corrosion spiral steel pipe has good chemical stability and electrical insulation, which can effectively resist the corrosion of acids, alkalis, salts and other chemicals, and prolong the service life of the pipeline.
2.Good durability: The outer sheath is made of high-density polyethylene material, which has high impact resistance and abrasion resistance, and can maintain stable performance in various environmental and climatic conditions.
3.Easy installation: The connection method of the three-layer polyethylene anti-corrosion spiral steel pipe is simple and reliable, and the welding process is mature, which greatly shortens the construction period and reduces the project cost.
4.Environmental protection and safety: The three-layer polyethylene anti-corrosion spiral steel pipe is non-toxic and tasteless in the production and use process, environmentally friendly, and meets the green environmental protection requirements of modern urban construction.
3. Production process of three-layer polyethylene anticorrosive spiral steel pipe.
The production process of three-layer polyethylene anticorrosive spiral steel pipe mainly includes the following steps:
1.Pretreatment: Carry out pretreatment such as rust removal and dust removal on the steel pipe to ensure that the surface cleanliness meets the requirements.
2.Spraying: Spray a layer of high-quality polyethylene raw material on the surface of the steel pipe to form an anti-corrosion layer.
3.Cooling: The anti-corrosion layer is cured through the cooling process to improve its adhesion and wear resistance.
4.Outer sheath processing: A layer of high-density polyethylene material is processed outside the anti-corrosion layer as the outer sheath layer to further enhance the protective performance of the pipeline.
5.Testing: Strict testing of finished products is carried out to ensure that the product quality meets the relevant standards.
Fourth, the application field of three-layer polyethylene anticorrosive spiral steel pipe.
Due to its excellent performance and wide range of applications, three-layer polyethylene anti-corrosion spiral steel pipe is widely used in the following fields:
1.City gas transmission: As a key pipeline for city gas transmission, the three-layer polyethylene anti-corrosion spiral steel pipe can ensure the safety and stability of gas transmission.
2.Petrochemical: In the petrochemical industry, pipelines often need to withstand the corrosion of various chemicals, and the three-layer polyethylene anti-corrosion spiral steel pipe can effectively resist these corrosions and prolong the service life of the pipeline.
3.Sewage treatment: In the field of sewage treatment, pipelines need to withstand the corrosion and wear of various acid and alkali substances, and the three-layer polyethylene anti-corrosion spiral steel pipe can provide good protection.
4.Agricultural irrigation: In the field of agricultural irrigation, pipelines need to withstand soil and water corrosion, and the three-layer polyethylene anticorrosive spiral steel pipe can provide long-term stable protection.
5.Other fields: In addition to the above fields, three-layer polyethylene anti-corrosion spiral steel pipes are also widely used in other fields such as construction, electric power, and ships.
Summary: As a key part of urban gas transmission, the three-layer polyethylene anti-corrosion spiral steel pipe has excellent anti-corrosion performance and long life. This article describes its characteristics, advantages, production process and application fields in detail. As an environmentally friendly and safe pipeline material, three-layer polyethylene anti-corrosion spiral steel pipe will still have broad application prospects in the future.