This twin-wall HDPE pipe offers a strong corrugated exterior and smooth blue interior for efficient drainage. Designed for municipal, industrial, and road projects, it resists deformation and chemical attack while ensuring high flow capacity. Available in SN4/SN8 stiffness classes with rubber-ring joints or welded options.
Gongchi HDPE Corrugated Drain Pipe (Double Wall) combines an external corrugated black shell with a smooth blue inner wall for superior flow performance and structural strength. Designed for large-scale stormwater management and underground drainage, this pipe offers outstanding load-bearing capacity, long service life, and easy jointing for high-efficiency installation in civil engineering and infrastructure projects.
Key Features
Twin-wall design: corrugated black exterior + smooth blue interior
Made from high-quality HDPE with excellent chemical resistance
Lightweight and flexible for fast deployment
High ring stiffness (≥ SN4 / SN8) supports heavy loads
Smooth inner bore ensures high flow rate and anti-clog performance
Resistant to corrosion, abrasion, and environmental stress
Available with rubber ring joints or heat-fusion connection
Optional perforated variants for sub-drainage systems
Application Fields
Municipal drainage and sewer systems
Road and highway stormwater management
Industrial site and airport drainage
Tunnel and rail infrastructure water channels
Agricultural irrigation and field drainage
Culverts, retention, and infiltration systems
Available Pressure Ratings & Sizes
Inner Diameter (ID): DN200 to DN1200mm
Ring Stiffness: SN4, SN8
Length: 6 meters (standard) or custom
Connection: Socket with rubber ring / welded joint
Color: Black exterior / Blue interior (color-coded for drainage)
Why Choose Gongchi?
Gongchi’s double-wall HDPE corrugated pipe is a preferred choice for government and commercial projects across Asia and the Middle East. Our 70,000㎡ production facility enables fast delivery, bulk export, and OEM/ODM customization. Whether you’re developing drainage for highways or smart cities, Gongchi offers a drainage solution you can trust.
