Introducing our cutting-edge high-performance rigid polyvinyl chloride (PVC-UH) water supply pipes, crafted from premium polyvinyl chloride polymer materials, enriched with vital additives. With an impressive MRS ≥ 25Mpa, these pipes are meticulously extruded and molded to perfection. As a pioneering innovation in water supply solutions, they elevate the mechanical properties of both the products and pipe connections, surpassing the capabilities of traditional PVC-U and PVC-M pipes.
Our PVC-UH water supply pipe stands out by enhancing the molecular chain structure of polyvinyl chloride, endowing the product with remarkable attributes: exceptional strength, robust pressure-bearing capability, and impressive ring stiffness. These pipes excel in both internal and external pressure scenarios, making them ideal for pipe gallery installations. Boasting excellent toughness, a high modulus, and minimal shrinkage, they offer over 45% ring flexibility and superior impact resistance, effectively accommodating material stress changes due to temperature variations within the pipe galleries. Featuring built-in plastic inspection wells, they ensure outstanding high-pressure sealing performance, guaranteeing a robust pipeline system seal. Enjoy hassle-free installation, rapid construction, and low maintenance costs-perfect for a design life exceeding 50 years. Offering unmatched investment value, these pipes are the epitome of high cost-effectiveness.

NO item technical specification 1 density (kg/m3) 1350~1460 2 Vicat softening temperature /ºC ≥80 3 Vertical retraction rate/ (%) ≤5 4 dipping test (15ºC,15min) Surface change is not inferior to 4N 5 Drop weight impact test(0ºC)TIR/(%) TIR≤5 6 hydrostatic strength No rupture, no leakage 7 Suitability (connection seal test, deflection test, negative pressure test) No rupture, no leakage

PVC-UH Water Supply Pipe Trench Excavation Standards and Backfill Soil Quality
1. Trench excavation should adhere strictly to established standards.
To prevent pipeline placement in permafrost, the trench depth must be determined by local data. Proper backfill is crucial to ensure that pipelines and interfaces remain intact by avoiding cracks from bending stress. Ensure the backfill allows for effective tamping and operation:
(1) Trench alignment should be straight. The trench's bottom width should exceed the pipe's outer diameter by at least 0.5m, with an overall width no less than 0.7m.
(2) Carefully regulate the trench's depth-neither too deep nor too shallow. If gravel is too deep, backfill and compact to the desired depth. Encountering hard soil or obstacles like stones may lead to trench curvature, insufficient depth, and increased construction complexity. This could cause pipes and fittings to bend under stress, risking joint leakage or rupture with rising water supply and pressure.
2.permafrost foundation and pipe trench settlement. During winter, ensure the trench bottom aligns with undisturbed soil, or is dense post-backfilling. High soil moisture and non-dense foundations can cause future thawing, leading to sinkage, pipe bending, joint breakage, added stress, potential joint leaks, or pipe ruptures.
3. Adhere to regulations during winter pipeline bonding.
PVC-UH tube adhesive is solvent-based, designed to expand or dissolve surfaces for strong bonding. Apply adhesive to the socket's inner and outer surfaces; upon insertion, extrusion pressure unites the surfaces. Solvent evaporation hardens the surface without compromising substrate strength, ensuring pressure resistance.
Optimal adhesive quantity is crucial-neither insufficient for sealing and strength nor excessive to avoid corrosion and softening, which could lead to cracks under water pressure. Low temperatures slow solvent evaporation, increasing the risk of deeper penetration and strength reduction.
Thus, bonding pipes must follow specifications meticulously. The adhesive should slightly overflow at the interface, to be wiped clean. Apply glue from the socket's interior outward to prevent flow onto pipe walls.
4. Accommodate pipe thermal expansion and contraction.
The thermal expansion coefficient for PVC-UH pipes is 0.07mm/m·ºC, higher than traditional pipes. Be mindful of temperature-induced longitudinal deformation, especially in surface water-sourced delivery systems.
In the realm of innovative piping solutions, the scalability of the rubber ring connecting pipe interface offers immense flexibility, making it a non-issue for adaptability. In contrast, bonded pipes, particularly open variants, present a challenge due to their rigid post-bonding interfaces, lacking the ability to expand or contract. Without the inclusion of expansion joints, the colossal stress from expansion or contraction can adversely affect the pipes or fittings themselves.
Our advanced pipe connection methods include a trio of robust options: solvent adhesive bonding, elastic sealing rings, and the seamless integrated rubber ring connections. These versatile methods ensure compatibility with a variety of other pipe systems, including cast iron pipes, through the use of flanges or other appropriate adapters, thereby enhancing adaptability and versatility.
Embark on a seamless connection journey with our meticulous program: thoroughly clean the working face, apply lubricant generously, and proceed with precision counterpart insertion for optimal results.
1. Begin installation with a thorough inspection of the quality of pipes, fittings, and rubber rings. Meticulously clean the working surface of both the socket and the corresponding end to ensure a flawless connection.
2. During pipe installation, orient the socket to naturally face the direction of incoming water, ensuring an efficient flow.
3. Generously apply lubricant to both the rubber ring and the insertion segment. Use an appropriate amount to prevent the lubricant from seeping into the socket groove. This minimizes friction between the rubber ring and the socket wall, preventing any potential overturn of the rubber ring. Common lubricants include detergent or soapy water, offering smooth installation.
4. Precisely align the socket ports, maintaining a straight pipeline axis for optimal function and integrity.
5. Securely place suitable wire rope sleeves on both sides of the socket, utilizing a tightener or hand wrench to pull them into the reticle. For medium-caliber pipes, use square wood to pad the port, gently tapping it into the socket with a mallet for a secure fit.

Pipe Specifications: The Ultimate Guide to Our Offerings
Diameter Range: Experience Versatility from dn20mm to 800mm
Pressure Grade: Robust Performance from 0.63MPa to 2.5MPa
Hydraulic Testing: Rigorous Quality Assurance via Random Sampling and Comprehensive Pipe Testing.
Durability Beyond Compare: Our Steel Skeleton Integrated Forming Rubber Ring Boasts a Remarkable Service Life of Over 50 Years
Safe and Pure: Our Non-Toxic, Hygienic Pipes Preserve Water Quality Without Compromise.
Unparalleled Resistance: Our Pipes Offer Exceptional Strength, Toughness, and Corrosion Resistance Against Acids and Alkalis. Seamless Integration: Experience Reliable Connection with Steel Skeleton Integrated Molding Rubber Rings and All-Plastic Pipe Fittings.
Cost-Efficiency at Its Best: Minimize Operating Expenses
Stay Smooth: Enjoy a Pipe Inner Wall That Remains Smooth for Extended Durations
Slash Transportation Costs: Optimize Your Logistics with Our Solutions.
Affordable Construction: Building with Ease and Economy
Lightweight Advantage: Enabling Simplified Construction Processes
Enhanced Convenience: Our Solutions Are More Efficient, Practical, and Cost-Effective.
Extended Longevity: Assured Performance Over the Long Haul
Long-Lasting Reliability: With a Service Life Exceeding 50 Years, Our Product Significantly Cuts Down on Maintenance and Replacement Expenses.

1. Building Water Supply: Our innovative small-diameter PVC-UH pipes are the ideal choice for building tap water systems. Renowned for their pocket-friendly cost, remarkable corrosion resistance, and maintenance-free longevity, these pipes guarantee efficient and uninterrupted water supply, making them a smart investment for any infrastructure.
2. Municipal and Urban Water Supply: Our cutting-edge large-diameter PVC-UH pipes excel in municipal water supply networks, urban water infrastructures, water galleries, and expansive water conveyance systems in water conservancy projects. As the perfect substitute for traditional cast iron and cement pipes, they offer unparalleled fluidity, immunity to corrosion, and lightweight handling, ensuring seamless and lasting performance.
3. Reclaimed Water and Chemical Medium Transportation: For municipal pressure drainage and sewage discharge needs, our PVC-UH pipes offer an exceptional solution. They are engineered to handle the challenges of reclaimed water and chemical medium transportation with ease, providing reliable, long-lasting service for a wide array of industrial applications.