PE Perforated pipes is a new type of pipe having a water-filtered (discharge) function, which overcomes many of other disadvantages of other drainage pipes, because of its unique design and good performance of materials, It has strong drainage and water seepage effect. Using the "capillary" phenomenon and "siphon" principle, set water absorption, water permeability, drainage as one of the solution, with engineering design requirements of pressure resistance, water permeability and filtration. It will not fracture due to geological and geographical temperature changes, and can achieve the effect of discharging clean water, will not cause secondary pollution to the environment, belongs to a new type of environmental protection products. Its construction is simple, no need joints, no special requirements for geology, terrain, it could be used for any areas where the underground drainage is required.

HDPE Perforated pipes have good chemical durablity that carry wastes, chemical mine waste, motor oil and mixed road waters. Due to its much light weight tan the concrete and iron or steel pipes, no need more mechanical work when construction, this is the reason why HDPE perforated pipes has cost advantages, it is easy to install, transport and store. The inner and outer surface are smooth, the Friction is small without a blockage. The ring stiffness is large, could bear high external loads, which can prevent the pipeline from collapsing. In addition, HDPE pipes are flexible, could adapt to the ground movement without breaking, deforming or cracking. The minimum service life will be more than 50 years.

Nowadays, the perforated drainage pipe system is widely used in the construction of sponge city. The design of sponge city should coordinate the system of natural precipitation, surface water and groundwater, coordinate the water supply, drainage and other water recycling links, and consider its complexity and long-term effect. The collection of surface and shallow rainwater through infiltration technology is the primary step in the entire water recycling development. However, traditional seepage pipes or perforated pipes either fail to achieve the expected leakage effect or are too expensive, making the construction of sponge city to be perplexed. Binggao pipeline as a research and development, production, sales as one of the scientific and technological innovation enterprises, we have successfully developed a new type of PE perforated drainage pipe that is very suitable for sponge city construction through a large number of scientific theoretical demonstrations and engineering practices, good result have been obtained.