What Are the Differences Between PE Water Supply Pipes and HDPE Double-Wall Corrugated Pipes?

• Material

PE water supply pipes are made of polyethylene (PE) resin, while HDPE double-wall corrugated pipes are manufactured from high-density polyethylene (HDPE) resin. HDPE boasts higher rigidity, structural stability and impact resistance, which endows HDPE double-wall corrugated pipes with distinct advantages in external pressure resistance and soil load-bearing capacity.

• Application

PE water supply pipes are primarily designed for potable water distribution systems. They are suitable for service temperatures below 40℃ and are not recommended for hot water conveyance. In contrast, HDPE double-wall corrugated pipes are widely adopted in drainage and sewage disposal projects where high pressure resistance is required. Their annular corrugated outer wall and smooth inner wall design optimize performance in withstanding external pressure and soil loads.

• Performance

PE water supply pipes exhibit excellent corrosion resistance and hygienic properties, making them suitable for use in various chemical environments. However, they may be susceptible to chemical corrosion from certain strong oxidants, aromatic hydrocarbons and halogenated hydrocarbons.

HDPE double-wall corrugated pipes, benefiting from their high-density material, deliver superior impact resistance and structural stability, making them ideal for drainage and sewage systems subject to heavy pressure loads.

In summary, PE water supply pipes and HDPE double-wall corrugated pipes differ significantly in material, application and performance. The selection of appropriate pipe materials should be determined based on specific operational requirements and environmental conditions.