HDPE double wall corrugated pipe, abbreviated as PE corrugated pipe, was first successfully developed in Germany in the early 1980s. After more than ten years of development and improvement, it has evolved from a single variety to a complete product line. The production process and usage technology are already very mature. Due to its excellent performance and relatively economical cost, it has been greatly promoted and applied in developed countries such as Europe and America.

Double wall corrugated pipe is a new type of lightweight pipe made of high-density polyethylene, which has the characteristics of light weight, high pressure resistance, good toughness, fast construction, and long service life. Its excellent pipe wall structure design greatly reduces the cost compared to other pipe structures. And due to its convenient and reliable connection, it has been widely used both domestically and internationally. Replace a large number of concrete pipes and cast iron pipes.

• Corrugated structure design, high ring stiffness and strong pressure resistance

  The outer wall is reinforced with corrugations and the inner wall is smooth. SN4-SN16 multi-level ring stiffness is optional. It resists overburden extrusion and ground vehicle load, and is not easy to deform and collapse when buried;

  Comply with GB/T 19472.1, ISO 9969, ASTM F667

• High toughness, anti-settlement, adaptable to geological deformation
  

  Elongation at break ≥800%, excellent flexibility, able to withstand uneven foundation settlement and frost heave displacement, and not brittle in low temperature environments;

  Complies with EN 1046, ISO 13479

• The inner wall is smooth and flat, and the drainage is smooth and not easy to accumulate.
  

  The inner wall roughness is ≤0.007mm, the water flow resistance is small, sedimentation is not easy, and the drainage and sewage efficiency is high;

  Complies with ISO 10838, AWWA M55

• Acid and alkali resistant, corrosion resistant, long-term underground stability
  

  Made of high-density polyethylene, it is resistant to soil acid and alkali, domestic sewage, industrial wastewater, microbial corrosion, and does not rust or scale;

  Complies with ISO 4433, ASTM D1693, EN 12573

• The flexible connection has good sealing performance and prevents leakage and pollution.
  

  The rubber ring socket connection is used to adapt to the expansion and settlement of the pipe, and the interface is tight to prevent sewage leakage from contaminating the soil and groundwater;

  Comply with EN 12814, GB/T 19472.1

• Light weight, fast and efficient construction and installation
  

  The pipe is light in weight, easy to transport and handle, and can be laid quickly by grooving without the need for large equipment, greatly shortening the construction period;

  Comply with GB 50268, ISO 10460

• Anti-aging and weather-resistant, wide environmental adaptability

  Suitable for a wide temperature range of minus 40°C to 60°C, resistant to sunlight, freeze-thaw, and salt spray erosion, and can be laid underground, in rivers, and in green belts;

  Comply with ASTM F714, GB/T 18252

• Anti-impact, anti-wear, and resistant to sand and gravel erosion

  Resistant to the erosion of sand and gravel in sewage and the extrusion and wear of hard objects in backfill soil, the structure is stable for long-term use;

  Comply with GB/T 21166, ASTM G75

• Environmentally friendly and pollution-free, suitable for sponge city construction

  The material is non-toxic and non-leaching, recyclable, and suitable for municipal rainwater, sewage, sponge city, and rural rainwater and sewage diversion projects;

• Long service life and low comprehensive operation and maintenance costs

  Underground drainage conditions have a designed service life of ≥50 years, require no anti-corrosion maintenance, and are widely used in municipal, residential, factory, and township drainage.

  Comply with GB 50235, AWWA C906