HDPE double-wall corrugated pipe is extruded from high-density polyethylene with corrugated outer wall and smooth inner wall at the same time fused and extruded at one time, it has the characteristics of good corrosion resistance, high insulation, strong low temperature resistance, good sealing performance, no leakage, etc. It is light in weight, not easy to break, easy to install, and is one of the substitutes for concrete pipe and cast iron pipe.
The outer wall is a ring corrugated structure, which greatly enhances the ring stiffness of the pipe, thus enhancing the resistance of the pipe to soil load.
Under the condition of equal load, HDPE double wall corrugated pipe only needs thin wall to meet the requirements, compared with steel pipe to save 40-60%; compared with cement pipe, the comprehensive cost is basically the same; compared with similar HDPE hollow winding pipe can also save 20-40%.
Light weight, the weight of the pipe is only 0.94-0.96g/cm, large length (less joints) handling and connection are more convenient; low requirements for the pipe trench and foundation, convenient connection and fast construction; in the crowded areas of the city, in the geological areas (such as high water table, soft foundation) double-wall corrugated pipe buried drainage pipe of this advantage is more obvious.
Smooth inner wall, roughness K value of not more than 0.01mm, and the molecular surface of HDPE material without positive and negative charges, the water charged impurities will not be attached to the wall to form scale, so the flow is very large. With good sealing performance, no leakage, can effectively control the pollution of groundwater resources.
The normal working temperature of HDPE double-wall corrugated pipe is between -40 degrees and 60 degrees, and it can be constructed normally in the severe cold of -30 degrees. The impact strength of HDPE is one of the best among plastic pipes (PE, PVC, PP, ABS, PB, etc.).
Its chemical molecules are not polar, chemical performance stability is excellent. In addition to a few strong oxidizing agents, most chemical media do not have a destructive effect on it. It does not breed bacteria, does not scale, and its circulation area does not decrease with the increase of running time.
It has good deflection, good dynamic fracture toughness KD value, good seismic resistance, can comply with the uneven settlement of the foundation, and is one of the pipeline materials with excellent seismic performance.
The working temperature is generally between 12-28 degrees, and the service life can be guaranteed to be more than 50 years under normal circumstances. Polyethylene raw material contains only two elements of carbon and hydrogen, which is harmless to the environment, environmental protection and health!
1. Municipal engineering rainwater, sewage discharge, residential community drainage project
2. Industrial drainage, sewage treatment plant, waste disposal site drainage conveyance
3. Agricultural irrigation water transfer, drainage
4. Chemical ventilation and chemical, mining fluid transportation
5. Low-voltage cable, communication cable sheathing pipe
