Three-layer polyethylene anti-corrosion steel pipe for urban water transportation
With the acceleration of urbanization, the problem of urban water supply has attracted more and more attention. In order to ensure the safety of urban water supply, anti-corrosion steel pipes have been widely used in urban water transmission systems. Among them, the three-layer polyethylene anti-corrosion steel pipe, as an advanced anti-corrosion technology, has excellent corrosion resistance and long service life, and has become an ideal choice for urban water transmission systems.
1. Advantages of three-layer polyethylene anti-corrosion steel pipe.
1.Strong corrosion resistance: The three-layer polyethylene anti-corrosion steel pipe adopts the inner and outer three-layer coating process, which has excellent corrosion resistance, can resist the erosion of a variety of chemicals, and effectively prevent the pipeline from rusting and chemical corrosion.
2.Good mechanical properties: three-layer polyethylene anti-corrosion steel pipe has good impact resistance and compressive performance, can withstand large external pressure and friction, and is not easy to damage.
3.Reliable connection: The three-layer polyethylene anticorrosive steel pipe adopts hot melt connection, which is reliable and not easy to leak, ensuring the safety of water supply.
4.Long life: Due to the excellent corrosion resistance and mechanical properties of the three-layer polyethylene anti-corrosion steel pipe, its service life is longer, which reduces the frequency of maintenance and replacement, and saves costs.
Application range of two- and three-layer polyethylene anticorrosive steel pipes.
1.Urban water supply system: Three-layer polyethylene anticorrosive steel pipes are widely used in urban water supply systems to provide safe and reliable drinking water for residents.
2.Sewage treatment plant: In the sewage treatment plant, the three-layer polyethylene anti-corrosion steel pipe can be used for sewage transportation and treatment, with good corrosion resistance and compressive performance.
3.Building water supply and drainage system: In the building water supply and drainage system, the three-layer polyethylene anticorrosive steel pipe can be used for the laying of rainwater, waste water and other pipelines, with a long service life and good corrosion resistance.
3. Production process of three-layer polyethylene anticorrosive steel pipe.
The production process of three-layer polyethylene anticorrosive steel pipe mainly includes the following steps:
1.Steel pretreatment: pretreatment such as rust removal and oil removal is carried out on the steel pipe to ensure that the surface cleanliness meets the requirements.
2.Inner coating: A layer of epoxy resin or polyethylene powder is coated on the inner wall of the steel pipe to form a dense protective film and enhance the anti-corrosion performance.
3.Middle layer coating: On the basis of the inner layer coating, a second layer of adhesive and polyethylene powder is coated to enhance corrosion protection and increase adhesion.
4.Outer coating: On the basis of the middle layer coating, the last layer of polyethylene powder is coated to form a complete three-layer anti-corrosion structure.
5.Heating and melting: The coated steel pipe is heated and melted, so that the coating and the steel pipe are tightly combined to form a strong anti-corrosion layer.
6.Cooling and packaging: The heated and molten steel pipe is naturally cooled, and the necessary testing and packaging are carried out to prepare for factory sale.
Fourth, the quality control of three-layer polyethylene anticorrosive steel pipes.
In order to ensure the quality and reliability of three-layer polyethylene anticorrosive steel pipes, strict quality control is required during the production process. Specific measures include:
1.Raw material quality inspection: Conduct quality inspection of raw materials used in production to ensure compliance with relevant standards and design requirements.
2.Production process control: Strictly control the production process parameters to ensure that each process meets the process requirements and avoid defects and problems.
3.Quality inspection and inspection: Carry out comprehensive quality inspection and inspection of the three-layer polyethylene anti-corrosion steel pipe produced, including appearance, size, coating thickness, adhesion and other indicators to ensure that the product quality meets the standard requirements.
4.Factory inspection and acceptance: The final inspection and acceptance of the product before leaving the factory to ensure that the product meets customer requirements and relevant standards. Rework or scrap non-conforming products.
V. Conclusions. To sum up, as an advanced anti-corrosion technology, three-layer polyethylene anti-corrosion steel pipe has excellent corrosion resistance and long service life. In the urban water transmission system, it can effectively ensure the safety of water supply and reduce maintenance costs.