The reasons why HDPE double-wall corrugated pipes are widely used in the field of buried drainage
France is one of the European countries where large-diameter buried drainage pipes are used most. The French government attaches great importance to environmental protection, so it invests a lot in the construction of pipe systems. Which type of structural wall pipe to choose depends on the different industrial resources, technical requirements and urban planning conditions of each country. Large-diameter double-wall corrugated pipes are preferred for buried drainage and sewage pipes with a diameter below 1200mm.
Advantages of HDPE double wall corrugated pipe
Compared with other plastic pipes (such as PVC), high-density polyethylene (HDPE) pipes have the characteristics of low density, good toughness, corrosion resistance, good insulation performance, and easy construction and installation, so they are widely used in municipal and construction in France Water supply and drainage, gas, heating, wire and cable threading, agricultural water-saving irrigation and other fields.
HDPE double wall corrugated pipe application fields
Due to its superior performance, HDPE double-wall corrugated pipes are widely used in various industries in France. According to the application field, it can be divided into water supply pipes, gas pipes, aluminum-plastic composite pipes, buried drainage pipes, agricultural irrigation pipes and electrical casings: according to the pressure situation, it can be divided into pressure pipes and non-pressure pipes. Water supply pipes and gas pipes belong to Pressure pipe category.
The development history of HDPE pipe materials.
The development of PE pipe materials can generally be divided into three generations: the first generation. It is equivalent to the current PE pipe material below PE 63; the second generation is equivalent to the current PE 80 grade PE pipe material; the third generation is called "third-generation PE pipe material" PE pipe material in the 1980s. 100. Many large petrochemical companies in the world have mass-produced PE 100 grade pipe materials recently. The fourth generation PE pipe material PE 125 has been developed. But not yet into the standard. PE used in the second and third generation pipes not only significantly increased the long-term strength, but also improved the resistance to environmental stress cracking and other properties. The wall thickness can be reduced under the same working pressure. Increase the conveying section: increase the pressure under the same wall thickness. Improve delivery capacity. Due to the obvious economic benefits, it can be applied to occasions with large diameters and poor operating environments (such as low temperature areas, seabeds), so the application field of PE pipes is wider. The third-generation PE100 is currently the most widely used in the French market.
what customers are most concerned about is the choice of hdpe double-wall corrugated pipe grades？
1. HDPE corrugated pipe selection grade The mechanism of the pipe receiving load is also relatively complicated. Since the plastic pipe is a flexible pipe, the pipe and the surrounding soil will have the effect of "pipe and soil together" under the external pressure load. rise to accept external pressure loads.
2. The selection grade of HDPE corrugated pipe determines whether the pipe can work normally after laying. The three parameters of load, pipe material and soil are very important, and the mutual influence of external pressure load is relatively complicated, mainly including soil weight and static load generated by the ground, and The dynamic load that occurs during the passage of transport vehicles.
3. Among the factors of whether hdpe double-wall corrugated pipe can be safely used under external pressure load, the laying condition is the most important. The selection of ring stiffness depends not only on the condition of external pressure load but also on the condition of the soil around the pipeline after laying.
4. It is not always possible to select the grade of HDPE corrugated pipe to ensure that the laying condition is good. If the laying condition is better, the pipe with low ring stiffness will not be greatly deformed. On the contrary, if the laying condition is not good, that is The use of pipes with relatively high ring stiffness may also cause excessive deformation and buckling instability.
Haili Pipe Industry Group from China is a professional HDPE double-wall corrugated pipe manufacturer and a top ten supplier in China. The HDPE double-wall corrugated pipes we provide meet the installation and environmental protection requirements of various countries and can Provide various quality system certification certificates. Welcome customers from all over the world to inquire at any time.