The economic benefits of HDPE structural wall pipesThe economic benefits of HDPE structural wall pipes
1. HDPE double-wall corrugated pipe has a long service life, more than 50 years.
The safe service life of HDPE double-wall corrugated pipe is more than 50 years. This has not only been proved by international standards and the new international, but also by advanced countries. Cement management theory has a service life of 20 years, but it is a silicate type, which is corroded by acid and alkali for a long time, and its service life is greatly reduced. There are instances of cement pipes all over the country where the ground sinks due to sewage leakage and the joints are broken, and the cement pipes have to be replaced within a few years.
2. HDPE pipe greatly shortens the construction period and reduces the difficulty of construction:
Because the quality of HDPE double-wall corrugated pipe is much lighter than cement pipe, it is very easy to be inserted, so the construction difficulty is greatly reduced; and the shortest HDPE double-wall corrugated pipe is 6 meters, and the cement pipe is 2.5 meters, which greatly shortens the construction period. .
3. HDPE double-wall corrugated pipe does not have high requirements on the bottom of the trench
Because the cement pipe is a steel pipe, in order to ensure the socketing effect, the bottom of the trench must be smoothed, preferably a foundation layer, and the construction personnel are required to have absolute sense of responsibility. The HDPE double-wall corrugated pipe is a flexible pipe, which does not require high requirements on the bottom of the trench. 4. The HDPE pipe will not break when it sinks to the ground or changes in the earth's crust;
The elongation rate of HDPE pipe is more than 20 times that of steel pipe, which is six and a half times that of PVC, but its elongation at break is very high and its extensibility is very strong. This means that in the case of ground subsidence or changes in the crust during an earthquake, the HDPE pipe can produce resistant deformation without breaking. This is far better than steel pipes, and also better than PVC pipes with obvious brittleness. This performance has been proved at home and abroad (the Great Hanshin Earthquake in Japan did not cause pipe fracture; it is proved that the HDPE pipe was not damaged in the Zhinan Baoshan earthquake).
5. The permeability of HDPE pipes is much lower than that of cement pipes, less than 2%, which will not cause secondary pollution to groundwater;
Cement pipe is inelastic. Although it is equipped with apron, the sealing effect is poor, especially because the cement pipe is heavy, it is not easy to construct, and the effect of the socket is ignored, which causes the apron to lose its function, thereby increasing the permeability of the pipe.
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