HDPE large-diameter corrugated pipes demonstrate more * and * compared to cement socket pipes

1. The permeability of HDPE large-diameter corrugated pipes is far * than that of cement pipes being less than 2%, which does not cause secondary pollution to groundwater     Cement pipes lack elasticity. Although they are equipped with rubber rings, the sealing effect is *. Particularly, due to the heaviness of cement pipes, construction personnel often neglect the socketing effect, causing the rubber rings to lose their function thereby increasing the permeability of the pipes. 

2. HDPE large-diameter corrugated pipes have a service life of *** over 50 years     The ** of PE large-diameter corrugated pipes is over 50 years, which has not only been proven by * and * but has also been *. The theoretical service life of cement pipes is 20 years, but as silicate-based materials*, they are significantly corroded by acids and alkalis, greatly reducing their lifespan. There are instances across the country where cement pipes had to be replaced within just a few years due to sewage leakage causing ground subsidence and joint fractures.  

3. The inner surface of HDPE large-diameter corrugated pipes is smooth, without positive or negative charge nuclei, and does not scale    Cement pipes are prone to scaling. After scaling occurs the pipe diameter decreases, affecting flow capacity.  

4. HDPE large-diameter corrugated pipes are lightweight, easy to transport and install, and incur no loss     Cement pipes are heavy, inconvenient to transport and install, and are prone to damage during transportation and installation.