First, the flow characteristics of large-diameter plastic-coated steel pipes for water supply:
1. When fluid passes through a plastic-coated steel pipe, the fluid flows faster in the pipe because the inner wall of the pipe is smooth and the friction resistance is small.
2. The cross-sectional area of the plastic-coated steel pipe is larger, which makes the average flow velocity of the fluid in the pipeline smaller, which is beneficial to reducing the pressure drop of the fluid.
3. The diameter of the plastic-coated steel pipe is larger, which can reduce the hydraulic loss inside the pipe and improve the flow coefficient.
4. Plastic-coated steel pipes have good pressure resistance and can withstand large pressure differences, which is beneficial for improving the flow coefficient.
Second, the application fields of large-diameter plastic-coated steel pipes for water supply:
1. Urban water supply system: Because large-diameter plastic-coated steel pipes for water supply are corrosion-resistant and not easy to scale, they are widely used in urban water supply systems.
2. Industrial fluid transportation: Plastic-coated steel pipes can be used to transport various industrial fluids, such as chemicals, petroleum, electric power, and other industries.
3. Air conditioning system: Plastic-coated steel pipes are used as hot and cold water pipes in air conditioning systems and have excellent performance.
4. Water supply in high-rise buildings: Plastic-coated steel pipes are used as water supply pipes in high-rise buildings and can effectively resist external pressure and impact.
Third, precautions for using large-diameter plastic-coated steel pipes for water supply:
1. When selecting plastic-coated steel pipes, the appropriate flow coefficient and pressure loss should be determined based on actual working conditions.
2. During the construction process, attention should be paid to protecting the inner and outer walls of the plastic-coated steel pipe to avoid scratches and wear.
3. When connecting plastic-coated steel pipes to other equipment or pipelines, appropriate connection methods should be used to reduce the pressure loss of the fluid.
4. During operation, leaks in the pipeline system should be checked regularly to detect and solve problems promptly.
Fourth, the installation method of large-diameter plastic-coated steel pipes for water supply:
1. Before installation, the pipes need to be inspected to ensure that there is no obvious damage or corrosion on the surface of the pipes, and debris and dirt inside and outside the pipes should be cleaned to keep the pipes dry and clean.
2. Set up pipeline bridges and brackets according to design requirements to ensure stable installation of pipelines. During the installation process, care should be taken to avoid bending and deformation of the pipeline and to maintain the horizontal and verticality of the pipeline.
3. Connect the pipes. Use flange connections or threaded connections to connect the pipes. The connections must be tightly sealed to prevent leakage and water seepage.
4. Carry out anti-corrosion treatment of pipelines. The pipe walls of plastic-coated steel pipes generally require anti-corrosion treatment to improve the corrosion resistance and service life of the pipes.
Fifth, the specifications of large-diameter plastic-coated steel pipes for water supply are divided into several aspects:
1. Inner diameter specifications: Common inner diameter specifications include DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, etc. Among them, DN20 means the inner diameter is 20mm, and so on.
2. Wall thickness: The wall thickness of large-diameter plastic-coated steel pipes for water supply is generally between 2mm and 10mm. The specific thickness can be selected according to actual engineering needs.
3. Length: The length of large-diameter plastic-coated steel pipes for water supply is generally 6m or 12m, and can also be customized according to actual engineering needs.
Sixth, how to select large-diameter plastic-coated steel pipes for water supply:
1. Project requirements: According to the specific needs of the project, such as water supply volume, transportation distance, transportation medium, etc., select water supply plastic-coated steel pipes of appropriate specifications.
2. Technical parameters: Pay attention to the technical parameters of plastic-coated steel pipes for water supply, such as pressure levels, hygiene standards, etc., to ensure that the selected pipes can meet the engineering needs.
3. Manufacturer reputation: Choose large-diameter plastic-coated steel pipes for water supply produced by manufacturers with good reputation to ensure product quality and after-sales service.
4. Price factor: On the premise of ensuring product quality, reasonably controlling project costs, and selecting large-diameter plastic-coated steel pipes for water supply with higher cost performance.
Post time: May-16-2024