Description

• Steel-Plastic Composite Structure The pipe features a U-shaped cold-rolled steel strip encapsulated within high-density polyethylene through a continuous winding and extrusion process. Because the elastic modulus of steel is approximately 200 times that of plastic, this reinforcement allows the pipe to achieve reliable ring stiffness ratings of SN8, SN10, SN12.5, and SN16. For project engineers, this ensures structural stability under high-load conditions, such as under highways and airport runways, where traditional plastic pipes might undergo excessive deformation.
• Total Encapsulation Corrosion Resistance The internal steel skeleton is completely sealed within the HDPE base material, preventing any direct contact with the external environment or the fluid being transported. This material property renders the pipe inert to acidic or alkaline soils and aggressive industrial wastewater. For the project owner, this eliminates the risk of rust and structural failure common in metal pipes, supporting a service life exceeding 50 years in diverse geological conditions.
• High Hydraulic Flow Capacity The extrusion process produces an ultra-smooth internal HDPE wall with a Manning’s roughness coefficient (n) of approximately 0.009 to 0.010. This low friction surface facilitates faster drainage speeds and reduces the accumulation of sediment compared to reinforced concrete pipes. This hydraulic efficiency often allows for the selection of smaller pipe diameters or flatter installation gradients, significantly reducing trench excavation volumes and overall project expenditure.
• Lightweight Efficiency and Logistics Weighing approximately 1/8th of a standard concrete pipe, this reinforced PE pipe is significantly easier to transport and handle on-site. The reduction in mass allows for manual positioning or the use of standard excavators rather than heavy-duty cranes. This characteristic lowers inland transportation costs and accelerates installation cycles, particularly in remote mining or rural irrigation projects where heavy machinery access is limited.
• Flexible Geological Adaptability Classified as a flexible pipe, this structure exhibits high anti-shock strength and the ability to redistribute external soil pressure through controlled deformation. Unlike rigid concrete or clay pipes that are prone to brittle fracture, the Steel Belt Reinforced PE Corrugated Pipe adapts to ground settlement and minor seismic activity. This flexibility minimizes the risk of catastrophic pipe bursts and joint displacements in areas with unstable soil or high groundwater levels.
• Thermal and Environmental Stability The high-density polyethylene used in production maintains its mechanical properties across a wide temperature range, resisting brittle cracking down to -60℃. The black carbon black additive provides UV protection, allowing for outdoor storage and construction without material degradation. This ensures that the piping system remains viable for infrastructure projects in both extreme cold and high-heat environments without the need for specialized insulation.
• Integrated Leak-Proof Connection Systems The pipe supports multiple heavy-duty connection methods, including electrofusion welding, heat-shrinkable sleeves, and stainless steel clamps. These joints create a monolithic or hermetically sealed connection that surpasses the sealing performance of traditional socket-and-spigot concrete joints. For municipal systems, this prevents groundwater infiltration and sewage exfiltration, thereby protecting the surrounding environment and reducing the unnecessary load on wastewater treatment facilities.

Product Manual

Corrugated Pipe - Product Manual

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Scope of application

• Municipal Sewage & Drainage Networks Used for urban underground gravity sewer lines. High ring stiffness (SN16) withstands heavy traffic loads, while HDPE material resists chemical corrosion, ensuring a maintenance-free service life of over 50 years.
• Highway & Railway Culverts Ideal for cross-drainage channels under transport infrastructure. Its flexible structure adapts to soil settlement and high-frequency vibrations without cracking, significantly reducing installation time and traffic disruption.
• Industrial Effluent & Chemical Transport Engineered for discharging acidic or alkaline wastewater from chemical and pharmaceutical plants. The fully encapsulated steel belt prevents leaks and structural failure caused by aggressive industrial media.
• Mining Ventilation & Slurry Drainage Deployed for underground mine ventilation and abrasive tailing slurry transport. Superior abrasion resistance and a -60℃ cold-tolerance range make it reliable for extreme high-altitude and underground mining environments.
• Airport Runways & Seaport Terminals Designed for heavy-duty drainage systems under airport aprons and container docks. The steel-plastic composite structure prevents radial deformation under the massive localized pressure of aircraft and heavy port machinery.
• Agricultural Irrigation & Seawater Systems Used for large-scale farmland irrigation and seawater intake. Its salt-alkali resistance and smooth inner wall (Manning’s n=0.009) increase flow capacity by 30% compared to traditional concrete pipes.
• Landfill Leachate Collection Applied in bottom-layer drainage for solid waste landfills. It maintains its structural cross-section under massive waste burial pressure while resisting concentrated chemical leachates to prevent groundwater contamination.

Parameters

PHYSICAL AND MECHANICAL PROPERTIES

SPECIFICATIONS

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