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High-pressure PVC-O water supply pipes are high-performance polyvinyl chloride water supply pipes modified by a bidirectional axial orientation process. They are specially designed for high-pressure conditions such as long-distance high-pressure water transmission in municipalities, secondary water supply in high-rise buildings, and high-pressure water supply and drainage in industries. Through the densification of the molecular structure, they achieve ultra-high pressure resistance. At the same pressure resistance level, the wall thickness is much thinner than that of ordinary UPVC and PE water supply pipes. They also have high strength, lightweight and high toughness characteristics. They are suitable for both buried and exposed installations and are the preferred high-performance and lightweight pipe material for high-pressure water transmission networks.
1. Made with high-pressure-specific PVC-O resin as the base material, formed through a bidirectional axial orientation process. The pipe's molecules are arranged in an orderly manner along both the axial and circumferential directions, resulting in a dense structure that combines high strength and high toughness, unlike ordinary extruded pipes.
2. High-pressure-resistant, thin-walled, lightweight design. At the same pressure rating, the wall thickness is only 1/2 to 2/3 of that of ordinary UPVC pipes, saving materials and reducing transportation and laying costs, while requiring less space for pipeline installation.
3. Clearly defined pressure ratings, primarily medium to large diameters (DN50~DN400), adapting to the pressure requirements of different high-pressure water transmission scenarios. The pipe has high roundness and precise dimensions.
4. Equipped with high-pressure-specific elastic sealing ring socket connectors. Some large-diameter/ultra-high-pressure models can be equipped with heat-fusion butt fittings. The interface sealing structure is optimized for high-pressure conditions and can be reinforced.
5. High-precision ultra-smooth inner and outer walls. The inner wall reduces head loss during high-pressure water transmission, while the outer wall is uncoated, wear-resistant, and contains UV-resistant and corrosion-resistant additives, suitable for outdoor/outdoor use.
6. The pipe body exhibits excellent resistance to low-temperature impact, with no risk of brittle fracture, making it suitable for high-pressure water transmission projects in different climates of northern and southern China. It possesses strong overall rigidity while also exhibiting a degree of flexibility, allowing it to adapt to minor ground subsidence.
1. Exceptional Pressure Resistance: Operating pressure can reach 2.0~4.0MPa, meeting the ultra-high pressure requirements of municipal long-distance high-pressure water transmission, secondary water supply for high-rise residential buildings, and industrial high-pressure cooling water distribution. Long-term high-pressure operation ensures no risk of pipe bursting, bulging, or leakage.
2. Mechanical Properties Far Exceeding Conventional Pipes: Tensile, compressive, and impact strengths are 2~3 times that of ordinary UPVC pipes. High ring stiffness allows it to withstand static soil loads after burial, heavy ground compaction, and construction impacts without deformation or damage.
3. High High-Pressure Water Transmission Efficiency: Thin-walled design with an ultra-smooth inner wall results in extremely low friction coefficient, significantly reducing head loss during high-pressure long-distance water transmission, lowering pump boosting energy consumption, and preventing scale buildup on the inner wall, ensuring long-term consistent water transmission efficiency.
4. Wide Weather and Corrosion Resistance and Adaptability: Operating temperature range - 15℃~70℃, suitable for normal temperature high-pressure cold water distribution; outdoor exposed installation resists UV aging, does not powder or crack; buried installation withstands soil acid, alkali, and salt, and weak groundwater corrosion, does not swell or age;
5. Reliable sealing and seepage prevention: High-pressure dedicated sealing rings achieve zero leakage at the interface under high-pressure conditions, avoiding waste of high-pressure water resources and preventing external mud, water, and impurities from seeping into the pipe, ensuring the water quality/medium purity of the pipeline network;
6. Aging resistance and long service life: Dense and stable molecular structure, excellent anti-aging and anti-fatigue performance, designed service life of over 50 years under high-pressure water transmission conditions, with no significant performance degradation over long-term operation;
7. Good geological adaptability: The pipe body combines high rigidity with a certain degree of flexibility, adapting to slight ground settlement and slight local bending of the pipeline network after burial, without the risk of breakage, improving the geological risk resistance of the high-pressure pipeline network.
