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The HDPE Hollow Wall Winding Drain Pipe is a premium buried drainage and sewage pipe manufactured by extruding high-density polyethylene (HDPE) profiles, followed by professional spiral winding and fusion welding processes. As the mainstream choice for large-diameter buried drainage projects, this pipe perfectly complements other HDPE drainage pipes and effectively makes up for the large-diameter limitations of traditional HDPE drain pipes. It is specially designed to meet the high-flow, deep-burial and heavy-load requirements of municipal drainage trunk pipelines, and its integral hollow-wound structure ensures superior mechanical stability and structural integrity. Widely used in municipal, industrial, transportation and other engineering fields, the HDPE Hollow Wall Winding Drain Pipe has become a core material for modern green drainage pipe network construction with its excellent performance and environmental protection features.
Item | Core Specification |
Nominal Outer Diameter | Conventional DN300-DN3000mm, larger diameters customizable |
Ring Stiffness Grade | Conventional SN8/SN12.5/SN16, SN20/SN25 customizable on demand |
Raw Material | 100% virgin HDPE, no added impurities |
Manning Roughness Coefficient | n=0.009 (super smooth inner wall) |
Design Service Life | Over 50 years for municipal and mild corrosive applications |
Connection Methods | Hot-melt winding, electrofusion, rubber ring flexible socket (for large diameters) |
Applicable Burial Depth | 3-8m, adaptable to heavy-load road sections |
Full coverage of large-diameter specifications: The spiral winding process supports the production of ultra-large diameter pipes up to DN3000mm, solving the flow limitation of small and medium-diameter pipes in municipal trunk drainage.
High and customizable ring stiffness: The hollow structure brings strong mechanical bearing capacity, and the high ring stiffness grades (SN20/SN25) can be customized for deep burial and heavy-load conditions, with better load resistance than same-diameter double-wall corrugated pipes.
Integral structural integrity: The pipe body is formed by fusion welding of profiles without splicing gaps, with strong anti-settlement and anti-deformation performance, and not easy to crack due to uneven foundation settlement.
Lightweight with high strength: The hollow-wall design reduces the pipe weight to 1/8-1/10 of the concrete pipe of the same diameter, which is easy to transport and install with conventional lifting equipment, greatly reducing construction costs.
Excellent low-temperature and impact resistance: The virgin HDPE material maintains good toughness and impact resistance at -40℃, and is not easily damaged by construction impacts or geological pressure, with strong environmental adaptability.
Zero leakage sealing performance: Fusion connection integrates the joint and the pipe body into one, and the rubber ring socket connection forms a flexible seal, fully meeting the anti-seepage requirements of sewage interception projects.
The HDPE Hollow Wall Winding Drain Pipe is the first choice for large-diameter, high-flow and deep-burial drainage projects, and its main application scenarios include: municipal rainwater/sewage trunk pipelines in urban main roads and central business districts; deep-buried drainage pipe networks for expressways and urban ring roads; sewage interception main pipes in urban black and odorous water body remediation; roadbed and slope deep-buried drainage pipes for highways and high-speed railways; municipal drainage trunk pipes in coastal silt and inland soft soil foundation areas; rainwater/sewage supporting pipes in urban utility tunnels; and outdoor stormwater and sewage main pipes for large commercial complexes and extra-large residential communities.
Our HDPE Hollow Wall Winding Drain Pipe is produced with 100% virgin HDPE raw materials, in line with green building material standards, and the product performance is stable and reliable without aging or corrosion risks. We have a professional R&D and production team, which can provide personalized customized solutions according to the actual needs of the project, including customized large diameters, high ring stiffness grades and special connection methods. All products undergo strict pressure and sealing tests before leaving the factory to ensure that each batch of pipes meets engineering quality standards. In addition, the pipe can be fully recycled after scrapping, realizing high resource utilization and meeting the environmental protection requirements of modern municipal engineering.
A: On the basis of the conventional DN300-DN3000mm, we can customize larger diameter pipes according to the engineering drawings and actual flow requirements of customers to meet the special needs of super large-flow drainage projects.
A: Yes, the 100% virgin HDPE material is non-reactive with acids, alkalis, salts and other mild corrosive media, and no additional anti-corrosion treatment is required, which is suitable for the discharge of mildly corrosive industrial wastewater in chemical parks and industrial parks.
A: Yes, the pipe supports on-site segmented winding and splicing for some processes, which can adapt to the space limitations of construction sites, and the trench excavation width is smaller than that of concrete pipes, effectively reducing the construction area and excavation costs.
