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High-density polyethylene (HDPE) double-wall corrugated pipe

HDPE double-wall corrugated pipe is a new type of pipe characterized by an annular outer wall and a smooth inner wall. It was first developed in Germany in the early 1980s. After more than a decade of development and refinement, it has evolved from a single product variety into a complete product series. Its production processes and application technologies have become highly mature. The pipe is manufactured in compliance with GB/T 19472.1-2019, "Underground Polyethylene (PE) Structural Wall Pipe Systems—Part 1: Polyethylene Double-Wall Corrugated Pipes."

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Resistant to external pressure

The annular corrugated structure enhances the pipe’s ring stiffness and its resistance to soil loads.

Environmentally friendly and non-toxic

Polyethylene is a non-toxic material that weighs significantly less than concrete pipes and has no impact on the environment.

Durable

It boasts excellent chemical stability and wear resistance that is several times higher than that of steel pipes, with a service life of over 50 years.

Easy to install and maintain

Lightweight, easy to handle and connect, quick to install, and simple to maintain.

Cold-resistant and impact-resistant

When constructing at temperatures above -30°C, no special protective measures are required, and it exhibits excellent impact resistance.

Low engineering costs

Under the condition of equal load, it saves about half the raw materials compared to solid-wall pipes made of the same material.

Mechanical Properties of HDPE Double-Wall Corrugated Pipes

Project	Technical Requirements
Ring stiffness	SN4 ≥ 4 kN/m²	SN8 ≥ 8 kN/m²
Impact strength	TIR ≤ 10%
Flexible ring	The specimen is smooth, with no reverse bending, no cracks, and no separation between the two walls.
Oven test	No bubbles, no layering, no cracking.
Creep rate	≤4

High-density polyethylene (HDPE) double-wall corrugated pipe

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