Three-layer PE coated anticorrosive spiral steel pipe.
With the continuous development of industry, anti-corrosion spiral steel pipes have been widely used in many fields. In order to improve the anti-corrosion performance of the pipeline, the three-layer PE-coated anti-corrosion spiral steel pipe came into being. This kind of steel pipe has good anti-corrosion performance, high strength and durability through three-layer PE coating technology, and is widely used in oil, natural gas, chemical industry, urban water supply and drainage and other fields.
1. The advantages of three-layer PE coated anticorrosive spiral steel pipe.
Compared with traditional anti-corrosion steel pipes, three-layer PE-coated anti-corrosion spiral steel pipes have the following advantages:
1.Strong anti-corrosion performance: Three-layer PE coating technology can provide excellent anti-corrosion protection, effectively resist the erosion of various chemicals, and ensure the service life of the pipeline.
2.High strength: The three-layer PE coated anticorrosive spiral steel pipe has high strength and stiffness, can withstand large pressure and bending stress, and is not easy to deform and damage.
3.Good durability: The anti-corrosion layer of the three-layer PE-coated anti-corrosion spiral steel pipe has good durability and stability, which can maintain the performance and appearance of the pipeline for a long time.
4.Easy installation: The connection method of three-layer PE coated anti-corrosion spiral steel pipe is simple and reliable, and welding, flange connection and other methods can be used, which has high installation efficiency and reduces the project cost.
5.Good environmental protection: the anti-corrosion layer of the three-layer PE-coated anti-corrosion spiral steel pipe is not easy to fall off, which will not cause pollution to the environment, and the reuse of the steel pipe is also convenient and environmentally friendly.
Production process of two- and three-layer PE coated anticorrosive spiral steel pipes.
The production process of three-layer PE coated anticorrosive spiral steel pipe mainly includes the following steps:
1.Pretreatment: Pretreatment such as rust removal and dust removal on the steel pipe to ensure that the surface is clean and ready for the coating of anti-corrosion layer.
2.Internal coating: A layer of epoxy resin powder is applied to the inner wall of the steel pipe to play the role of anti-corrosion and anti-scaling.
3.Hot melt adhesive application: A layer of hot melt adhesive is applied to the outside of the inner coating to increase adhesion and prevent peeling.
4.External coating: A final layer of polyethylene powder is applied to the outer surface to form a complete anti-corrosion layer.
5.Cooling and curing: The steel pipe is passed through a cooling channel to allow it to be cured and shaped naturally.
6.Testing and packaging: testing and acceptance of finished products, and necessary packaging and identification.
3. Application scenarios of three-layer PE coated anticorrosive spiral steel pipes.
Due to the excellent anti-corrosion performance, high strength and durability of the three-layer PE coated anti-corrosion spiral steel pipe, it is widely used in the following fields:
1.Oil and gas transportation: used for oil and gas pipeline transportation, it can resist the corrosion of various oils and gases and ensure the safe operation of pipelines.
2.Chemical pipeline: It is suitable for the piping system in the chemical production process, which can effectively prevent the corrosion of acids, alkalis, salts and other chemicals.
3.Urban water supply and drainage: used in urban water supply and drainage pipeline system, which can resist the erosion of corrosive substances in water and ensure the safety of water quality.
4.Wastewater treatment: suitable for the piping system of various sewage treatment plants, able to withstand harsh environmental conditions and corrosive substances.
5.Other fields: It can also be applied to pipeline systems in ships, docks, airports and other fields, with good anti-corrosion protection.
IV. Conclusions. As a new type of anti-corrosion pipeline material, three-layer PE coated anti-corrosion spiral steel pipe has excellent anti-corrosion performance, high strength and durability, so it has been widely used in various fields. With the continuous progress of technology and the increasing application demand, the market prospect of three-layer PE coated anticorrosive spiral steel pipe will also be broader. At the same time, in order to better meet the application needs, it is also necessary to continuously strengthen R&D and innovation, improve the quality and performance of products, and promote the sustainable development of the anti-corrosion spiral steel pipe industry.