Double-Wall Corrugated HDPE Pipes

Double-Wall Corrugated HDPE Pipes are manufactured from high-density polyethylene (HDPE) with two separate walls. The outer wall has a corrugated and spiral-profiled structure that provides suitable mechanical strength and resistance to external loads, while the inner wall has a smooth surface that reduces flow resistance and facilitates network inspection and cleaning.

The pipes are suitable for applications where resistance to corrosion, abrasion, and many chemicals is required. Their technical specifications are selected according to project conditions, including burial depth, soil conditions, bedding type, traffic loads, and other applied loads.

Technical Features

• Manufactured from High-Density Polyethylene (HDPE)
• Double-wall construction
• Corrugated and spiral-profiled outer wall
• Smooth and polished inner wall
• Suitable mechanical strength against external loads
• Resistance to corrosion, abrasion, and many chemicals
• Lower weight compared with many similar concrete and metal pipes
• Smooth internal surface with reduced flow resistance
• Suitable for buried installation
• Suitable for water-tight connections using spigot-and-socket joints with rubber rings
• Available with different profiles according to project requirements
• External wall can incorporate carbon black for improved UV resistance
• Light-colored internal wall facilitates video inspection of the network
• Suitable service life and low maintenance requirements under appropriate operating conditions

Applications

• Municipal and industrial wastewater collection and transmission networks
• Gravity-flow water and wastewater transmission lines
• Drainage and surface-water collection systems
• Stormwater and floodwater management
• Water conveyance channels and routes
• Protection and routing of telecommunications and fiber-optic cables
• Utility conduits and ventilation systems
• Transfer of selected industrial fluids compatible with HDPE
• Urban infrastructure and utility projects
• Seawater and cooling-fluid transfer in selected industrial and petrochemical applications, according to project design and specifications

Technical Selection Parameters

Pipe diameter, ring stiffness, and other technical specifications are selected according to:

• Burial depth
• Soil conditions
• Bedding conditions
• Traffic loads
• Other external loads
• Project requirements