loading
General MPP Power Pipe is a specialized buried power cable protection pipe made from modified polypropylene through extrusion molding. It is the mainstream protection pipe for buried power cables in municipal, transportation, industrial, and mining sectors. Its core application is the buried protection and trenchless crossing of high-voltage/low-voltage power cables and communication optical cables. Its performance characteristics are designed around the core requirements of insulation, external pressure resistance, corrosion resistance, and construction adaptability for power engineering projects, and its application scope covers various buried power and communication pipeline scenarios.
MPP power conduits, leveraging the material modification advantages of MPP, are optimized for the specific operating conditions of power cable protection. Unlike PVC and PE pipes, their performance characteristics focus on key aspects such as electrical insulation, resistance to external pressure and deformation, suitability for trenchless installation, and temperature and corrosion resistance.
Modified polypropylene is a high-molecular-weight insulating material. The pipe has high dielectric strength and volume resistivity, and is non-conductive, effectively isolating stray currents in the soil and preventing cable leakage and short circuits. Its insulation performance does not degrade due to aging during long-term use, making it a core performance feature for power cable protection, suitable for the laying and protection of 10kV~220kV high and low voltage cables.
The pipe wall structure is a solid wall design, with conventional ring stiffness grades of SN8, SN12.5, and SN16. Trenchless pipes can achieve ring stiffness of SN20 and above, able to withstand static soil loads and dynamic vehicle loads after burial, as well as the mechanical forces of pipe pulling/jacking during trenchless construction. The pipe body is not easily deformed or collapsed, preventing compression damage to the internal cables.
Modified polypropylene significantly improves the temperature resistance of the base material. The pipe can be used for a long time in a temperature range of **-20℃~95℃**, withstanding both the freeze-thaw expansion and contraction in northern winters and the local temperature rise generated during cable operation. It will not crack or soften due to temperature changes, making it suitable for the cable's operating environment.
The material has excellent toughness and maintains good impact resistance even in low-temperature environments. Lifting, handling, and laying impacts during construction, as well as compression from stones in the soil after burial, will not cause the pipe body to crack. During trenchless pipe pulling/jacking, the pipe body can withstand the tensile force of the directional drill and the thrust of the pipe jacking machine without the risk of fracture.
It does not react with corrosive media such as acids, alkalis, salts, sulfides, and oxides in the soil, and is free from rust, aging, and swelling. Compared with steel pipes, it does not require anti-corrosion treatment, and its soil corrosion resistance is stronger than that of PVC pipes. It can still be used stably in corrosive soil areas such as saline-alkali land and chemical parks, with a designed service life of over 50 years.
The trenchless MPP power pipe has a smooth outer wall and a flat inner wall, resulting in low friction resistance. In trenchless construction methods such as directional drilling, pipe jacking, and pipe ramming, the pipe body can smoothly pass through roads, rivers, railways, and building foundations. The pipe body's compressive, bending, and tensile properties match the requirements of trenchless mechanical construction, making it the preferred pipe material for trenchless cable laying in core urban areas.
The pipe material has a low density, weighing only 1/8 of steel pipes and 1/10 of concrete pipes. Regular sizes (dn110~dn250) can be manually handled and laid, while large-diameter sizes (dn315~dn500) can be handled with small lifting equipment. Transportation, loading, unloading, and laying costs are low; the connection methods mainly include hot-melt butt welding, electrofusion socket welding, and sealing ring socket welding. The process is simple, and the on-site construction speed is fast, which can significantly shorten the construction period.
Hot-melt connection fuses the pipe joints into one piece, and the sealing ring socket connection is a flexible sealing structure. Both can achieve zero leakage, effectively preventing sand and groundwater from entering the pipe, avoiding cable wear from sand and aging from water immersion, and providing a fully enclosed protective environment for the cables.
The production raw material is environmentally friendly modified polypropylene, without the release of toxic and harmful substances. The production process does not produce waste gas or slag pollution, and buried use will not cause secondary pollution to the soil and groundwater; after the pipe is scrapped, it can be recycled and remelted for reprocessing, resulting in high resource utilization, meeting the building material requirements of municipal green engineering.
Standard nominal outer diameters include dn110, dn160, dn200, dn250, dn315, dn400, and dn500mm. Wall thickness is adjusted according to the ring stiffness grade. Specifications for open-trench and trenchless installation methods are available, allowing for flexible selection based on the number of cables, installation depth, and load conditions.
MPP power pipes are specialized protective pipes for buried power cables and communication optical cables. The open-trench type is suitable for conventional buried construction, while the trenchless type is suitable for crossing construction in urban core areas where excavation is not feasible. They cover all power and communication pipeline laying scenarios in municipal, transportation, industrial, mining, and construction sectors, and are the mainstream product replacing traditional steel pipes, concrete pipes, and PVC power pipes.
Buried protection of 10kV~220kV high-voltage power cables in urban main roads, secondary roads, and pedestrian streets; pre-embedding of municipal power grids in new urban areas, central business districts, and industrial parks;
Buried protection of urban communication optical cables and broadcasting optical cables; isolation protection for power pipes and communication pipes laid in the same trench to avoid signal interference;
Cable/optical cable protection for trenchless crossing of roads/squares in urban core areas (such as city centers, business districts, and cultural heritage protection areas), using MPP pipe jacking/pipe pulling for trenchless construction, without affecting traffic and ground facilities.
Pre-embedded cable protection for roadbeds of expressways, national highways, and provincial roads; power cable/communication optical cable protection for toll stations and service areas; trenchless cable protection (MPP pipe pulling) for crossing expressways;
Power grid laying and protection for railways and high-speed rail stations; trenchless cable/optical cable protection for crossing railway roadbeds and platforms, avoiding excavation that affects railway operations;
Buried protection of power and communication pipelines in airports, ports, and logistics parks; trenchless pipeline crossing protection in core areas such as runways and cargo areas.
High and low voltage cable protection in large industrial parks, chemical parks, metallurgical parks, and mines; buried cable laying in corrosive soil areas, adapting to the complex soil environment of industrial and mining enterprises;
Cable protection from factory power distribution rooms to production workshops; pre-embedding of pipelines in factory roads and production areas; trenchless cable protection for crossing main factory roads and production equipment foundations.
Pre-installation of outdoor power distribution networks in residential communities, commercial complexes, and office buildings; protection of low-voltage cables from substations to buildings; buried cable laying in community roads and green areas;
Protection of power and communication pipelines in large-scale cultural tourism projects, health and wellness communities, schools, and hospitals; trenchless pipeline crossing construction in core areas.
Trenchless protection of power/communication pipelines crossing rivers, lakes, and wetlands, using MPP pipe jacking/pulling for underwater crossings without the need for cofferdam excavation;
Buried cable protection in special geological areas such as soft soil foundations, saline-alkali land, and collapsible loess, utilizing its anti-settlement, corrosion resistance, and deformation resistance characteristics to prevent pipe body damage and cable damage;
Protection of power cable branch pipes in urban utility tunnels, and protection of pipeline connections between the utility tunnel and external substations and buildings.
