HDPE Dwc Double Wall Corrugated Pipe for Underground Sewer Line

HDPE Dwc Double Wall Corrugated Pipe for Underground Sewer Line. This HDPE double wall corrugated pipe features a hollow double-layer structure with high ring stiffness, good resistance to external pressure and ground settlement. Its smooth inner wall reduces flow. Our HDPE double wall corrugated pipe has corrugated outer wall and smooth inner bore. The hollow design delivers excellent ring stiffness and impact resistance. It withstands acid, alkali and corrosio. Hollow double-wall structure, high ring stiffness, anti-pressure & anti-subsidence for buried heavy-load conditions.