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Trenchless PVC-O water supply pipes are high-performance polyvinyl chloride water supply pipes modified by a bidirectional axial orientation process. They are specifically designed for trenchless construction conditions such as municipal pipeline network renovation, road/river/building crossings, and urban underground pipeline laying. They are specifically enhanced with core properties such as tensile strength, compression resistance, wear resistance, and soil disturbance resistance. They also have high toughness and high ring stiffness, and are compatible with trenchless processes such as directional drilling, pipe jacking, and pipe ramming. They do not require large-area surface excavation, are highly efficient in construction, and do not damage the surrounding environment. They are the special high-performance pipe material for trenchless laying of underground water supply networks.
1. Made with trenchless PVC-O resin as the base material, formed through bidirectional axial orientation. The pipe's molecules are densely and orderly arranged axially and circumferentially, resulting in a combination of high toughness and high rigidity. It can withstand the complex mechanical forces of trenchless construction, such as axial tension and radial jacking, unlike ordinary buried PVC-O pipes.
2. Optimized design with tensile strength and high ring stiffness significantly improves the axial tensile strength of the pipe. It can withstand soil compression and mechanical jacking in the radial direction, making it more resistant to mechanical damage from trenchless construction than ordinary PVC-O pipes of the same specifications.
3. The outer wall of the pipe undergoes a wear-resistant and scratch-resistant treatment with added wear-resistant additives, resisting trenchless pullback/ 4. Prevents pipe breakage due to intense friction with soil, gravel, and drill rods during jacking;
5. Uses specialized trenchless connectors with anti-detachment and anti-seepage features highly elastic sealing rings resistant to soil disturbance and reinforced joints to prevent detachment and leakage during construction due to pulling or jacking;
6. Diameter compatible with mainstream trenchless pipe sizes (DN80~DN400), with high pipe roundness, precise dimensions, and smooth, burr-free ends, resulting in low frictional resistance with the soil during pullback/jacking and smooth laying;
7. Possesses excellent flexibility, adaptable to small radius curves in trenchless construction, and can withstand minor disturbances and settlements in the underground strata after laying, with no risk of brittleness or breakage.
1. Excellent Mechanical Properties for Trenchless Construction: Axial tensile strength and radial compressive strength are far superior to ordinary PVC-O pipes. It can withstand the tensile stress of directional drilling pullback and the pushing and compressing pressure of pipe jacking construction, without damage, shrinkage, or deformation during construction.
2. Ultra-Wear-Resistant Outer Wall: The wear-resistant modified outer wall can withstand the severe friction with sand, soil, and drilling tools during trenchless construction. The pipe body remains scratch-free and undamaged, and its integrity is not affected after laying.
3. High Ring Stiffness and Burial Compatibility: The ring stiffness meets the requirements for trenchless burial. After laying, it can withstand long-term static loads on underground soil and dynamic loads from surface vehicles, without collapse or affecting water delivery.
4. Sealed, Leak-Proof, and Disturbance-Resistant: The trenchless-specific interface ensures excellent sealing and seepage prevention during construction. Even under jacking and subsequent soil disturbance, it maintains zero leakage, effectively preventing underground mud and sewage from seeping into the pipe, avoiding water medium pollution and water resource loss;
5. High hydraulic water conveyance efficiency: The inner wall maintains the high-precision ultra-smooth characteristics unique to PVC-O pipes, with an extremely low coefficient of friction, reducing head loss in long-distance buried water conveyance, and is not prone to scaling, ensuring long-term water conveyance efficiency without decline;
6. Stable corrosion and aging resistance: The pipe body is added with soil corrosion resistant and antimicrobial erosion accretive agents, making it resistant to the weak corrosion of various soil acids, alkalis, salts, and groundwater after burial. Its dense molecular structure allows for a designed service life of over 50 years;
7. Good flexibility and adaptability to curved laying: It can adapt to the requirements of small curvature radius curved laying in trenchless construction (curvature radius conforms to pipe technical specifications), and can also adapt to slight underground stratum settlement and soil disturbance, eliminating the risk of brittle fracture.
