What are the main uses of large-diameter double-wall corrugated pipes?
In the past, cement pipes were mainly used in my country. However, cement pipes have many shortcomings that are difficult to overcome. One is that the pollution caused by the cement industry in the upstream link to the environment is extremely serious, the production and processing energy consumption is high, and resources are wasted. There are obvious signs of dust in the production process, and the three wastes generated are difficult to handle and seriously endanger the natural environment of the surrounding areas. Second, cement pipes are heavy, inconvenient to transport, complex construction, and long engineering cycles, which consume a lot of manpower and material resources and reduce work efficiency. Third, the connection quality is low and easy to leak. This is the biggest problem of cement pipes. If it is transporting non-drinking or irrigation water, it will waste precious water resources. If it is transporting harmful liquids, it will pollute the environment and threaten people's health. Fourth, the internal resistance of the pipe wall is large during transportation, and the smoothness of the cement pipe is poor, which affects the transportation speed and flow rate. In addition, when transporting non-drinking water, bacteria may grow on the inner wall, affecting the water quality. Fifth, the service life is short, the cement pipe has poor corrosion resistance, and it is easy to be destroyed in a long-term dark and humid environment, which reduces the service life of the project.
With the widespread use of plastic buried drainage pipes abroad, China has also begun to gradually adopt them in recent years. The reason is that plastic pipes have obvious advantages in performance. PVD large-diameter double-wall corrugated pipes are new engineering pipes developed internationally in the late 1980s and early 1990s. Its hollow ring structure is more reasonable in mechanics. Therefore, it has the characteristics of light texture, high strength and good toughness. At the same time, it also has the advantages of easy laying, low resistance and low cost. Corrosion resistance, its performance and economic efficiency far exceed the ordinary specifications of PVD pipes, traditional iron pipes and cement pipes, and are the replacement products of engineering pipes. It is widely used in agricultural irrigation and drainage, urban sewage discharge, low-pressure water delivery and other fields.
The main purpose of the large-diameter double-wall corrugated pipe expansion machine is to be used as a buried pipe. Under the action of gravity, the buried drainage pipe transports non-drinking, sewage, rainwater or other gases, liquids, etc. to users, sewage treatment plants, and rivers. Generally, it is transported under gravity, there is no pressure in the pipe, and it only bears the load imposed by the soil. Therefore, the performance requirements for buried pipelines are: 1) strength and stiffness (ability to withstand loads in geographical conditions); 2) hydraulic characteristics (ability to transport liquids); 3) sealing (no leakage, prevent pollution); 4) service life (corrosion resistance, wear resistance); 5) easy to lay and install; 6) comprehensive economic performance.
In summary, it is not difficult to draw the following conclusions: Plastic pipes replacing concrete pipes is the trend of building materials development in my country. Investment in equipment for environmental protection and water supply projects is increasing, and domestic cities are introducing sewage treatment projects and new water source projects into the recent development plan. The South-to-North Water Diversion Project and environmental protection projects have huge demands for pipelines. Large-diameter plastic pipes are practical and bring opportunities for their development, and will also play a huge role in promoting environmental protection planning!
