Description

• Co-extruded Silicon Core Layer The internal silicon solid lubricant is synchronizely embedded into the HDPE shell through multi-machine co-extrusion, ensuring the lubricating layer will not strip or degrade over the pipe's service life. This structural integrity maintains a permanent low-friction environment, allowing for the repeated extraction and tensioning of cables without compromising the duct's performance or requiring secondary lubricants.
• Ultra-Low Friction Coefficient The smooth inner wall and integrated silicon core significantly reduce friction during cable laying, enabling the use of cable blowing machines for single-run distances of 1,000 to 2,000 meters under normal conditions. For the project, this translates to fewer intermediate handholes and connection points, effectively reducing total construction time and long-term maintenance costs.
• High Ring Stiffness and Impact Resistance The HDPE shell material possesses high tensile strength and impact resistance, providing robust mechanical protection against external pressure, crushing, and environmental stress during and after laying. This physical durability ensures the integrity of the communication network even in complex soil conditions or areas subject to heavy surface loads.
• Exceptional Thermal Stability This telecom duct is engineered to operate within a wide temperature range of -60°C to 60°C, with the material capable of withstanding environments from -40°C up to 100°C. Such thermal stability prevents pipe deformation in high-heat scenarios and maintains flexibility in freezing conditions, ensuring reliable protection across diverse geographical climates.
• Chemical and Corrosion Resistance The high-density polyethylene material is naturally resistant to chemicals, water, and aging, providing a projected service life of up to 50 years. By resisting underground chemical erosion and damp-proof conditions, the pipe extends the operational life of the internal fiber optic cables and reduces the risk of signal degradation.
• Optimized Flexibility and Bending Performance With a bending radius as low as 10 times the external diameter, the HDPE silicon core pipe adapts easily to complex laying environments and obstacles. This flexibility simplifies installation in non-linear pathways, significantly lowering project costs—often up to 70% less than traditional PVC electrical piping systems.
• Environmental Barrier and Rodent Protection The pipe's dense structure is both waterproof and damp-proof, creating a sealed environment that prevents the ingress of moisture. Furthermore, its material properties help avoid damage caused by rodent animals, protecting sensitive communication infrastructure from physical breaches that could lead to network downtime.

Scope of application

• Long-Distance Telecommunication Backbones In the telecommunications industry, these pipes serve as the primary underground cable duct for long-haul optical fiber trunk lines. The internal silicon lubricant supports high-speed air blowing cable installation techniques, allowing for continuous runs of 1,000 to 2,000 meters in a single operation. The HDPE shell protects against damp-proof conditions and underground chemical corrosion, maintaining signal integrity over a 50-year service life.
• Highway and Expressway Communication Systems This low friction HDPE pipe is extensively deployed along highway corridors to house monitoring, emergency voice, and traffic management signal cables. It is designed to withstand the vibrations and mechanical stresses typical of roadside burial while providing a waterproof and damp-proof environment for critical electronic cables. The pipe's ability to operate from -60°C to 60°C ensures stability across varying regional climates.
• Railway Network Signal Protection In railway engineering, HDPE silicon-core pipe provides specialized protection for railway signal and communication cables. Its high ring stiffness and impact resistance are essential for surviving the burial process near rail beds where external pressure and potential crushing forces are frequent. The conduit also effectively avoids damage from rodent animals, which is a common cause of signal failure in remote rail sectors.
• Photovoltaic (PV) and Renewable Energy Power Systems Within large-scale solar farms, these pipes act as the cable protection tubing for high-capacity power systems and control wiring. They are particularly effective in rugged or complex laying environments where high flexibility and a bending radius of at least 10 times the external diameter allow for navigation around terrain obstacles. The material’s high-temperature stability ensures it can withstand prolonged exposure to heat in open-field energy sites.
• Smart City and Urban Utility Infrastructure For urban utility deployments, this silicon core duct is used for the protection of metropolitan area networks (MAN) and smart city sensor cabling. The ability to repeatedly extract and tension cables within the pipe without stripping the internal lubricant makes it ideal for future network expansions or cable upgrades. It significantly reduces project costs compared to traditional PVC electrical piping by streamlining construction time and reducing handhole requirements.
• Industrial Automation and Vehicle Electronic Networks In heavy industrial zones or vehicle electronic testing facilities, the pipe is utilized as a protective sleeve for electronic communication networks. The anti-corrosion properties of the HDPE material make it suitable for environments where exposure to weak acids, bases, or water-borne chemicals is a factor, preventing premature cable failure due to environmental degradation.

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