The inner wall of the double-wall corrugated pipe is smooth and flat, while the outer wall features a trapezoidal or arc-shaped corrugated rib design. The space between the inner and outer walls is hollow, and the pipe is manufactured using an extrusion molding process. This product is suitable for polyethylene double-wall corrugated pipes used for underground drainage and communication ducts, with a long-term temperature not exceeding 45°C. It can also be used for industrial drainage and sewage pipes.