| Customization: | Available |
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| Material: | PVC |
| Hardness: | Hard Tube |
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Our high-performance rigid polyvinyl chloride (PVC-UH) water supply pipes are crafted from superior-grade polyvinyl chloride polymer materials, enhanced with essential additives for exceptional performance. The MRS ≥ 25Mpa ensures these pipes are extruded and molded to perfection. As a pioneering solution in the realm of water supply pipes, this innovation elevates the mechanical properties and enhances the durability of both the products and their connections beyond what traditional PVC-U and PVC-M pipes can offer.
The PVC-UH water supply pipe boasts an advanced molecular chain structure of polyvinyl chloride, delivering unmatched high strength and pressure endurance. With remarkable ring stiffness and internal as well as external pressure resilience, it is ideal for pipe gallery installations. This pipe features impressive toughness, a high modulus, minimal shrinkage, and over 45% ring flexibility, ensuring excellent impact resistance. It adeptly handles material stress release due to temperature variations in the pipe gallery, and incorporates built-in plastic inspection wells with superior high-pressure sealing performance to guarantee a leak-proof pipeline system. Its ease of installation and rapid construction significantly reduce maintenance costs, while offering a design life exceeding 50 years. This results in a low investment yet highly cost-effective solution for all your water supply needs.
| 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 |
Trench Excavation Standards for PVC-UH Water Supply Pipes and Optimal Backfill Soil Quality
1. Trench excavation must adhere to high industry standards to ensure success.
To prevent pipelines from being laid within permafrost layers, it's crucial to determine trench excavation depth by considering and summarizing local geological data. This ensures efficient backfill operations, essential for preventing pipeline and interface cracking due to bending stress. Here are the key requirements:
(1) Trenches must be meticulously straight, with the bottom width not less than the pipe's outer diameter plus 0.5m, ensuring a total width of no less than 0.7m for optimal stability.
(2) Rigorously maintain precise bottom depth-neither too deep nor too shallow. In cases of excessive gravel depth, backfill and compact to the specified levels. In areas encountering hard soil or obstacles, such as stones, trenches may curve slightly to facilitate construction. Ensure curves are gentle and depth is consistent to prevent pipe bending, which causes undue stress on the pipe, fittings, and joints. Increased water supply pressure can result in joint leakage or rupture.
2. Avoid permafrost-related foundation issues and potential trench settlement. During winter, ensure that pipe trenches rest on undisturbed soil or well-compacted backfilled ground. High soil moisture content can cause future permafrost melt and trench settlement, leading to pipe sinking, bending, and joint breakage with increased stress. Minor issues may cause joint separation and leaks, while severe cases lead to rupture.
3. Winter pipeline bonding must strictly follow established regulations.
PVC-UH tube adhesive, primarily composed of PVC-UH solvent, functions by applying adhesive to the socket's inner and outer surfaces. This causes expansion or dissolution in the PVC-UH-polyurethane tube's surface, allowing extrusion pressure to unite these surfaces during socket insertion. The adhesive's solvent easily volatilizes, reverting the dissolved surface to a solid state, maintaining substrate strength and ensuring bonding strength meets pressure requirements.
Adhesive quantity should be precisely controlled-neither too scant to compromise sealing and strength, nor excessive, which may flow along pipe walls, corroding and softening them. Overuse leads to cracking under water or pressure. In cold conditions, slowed adhesive volatilization increases penetration, weakening the pipe wall.
Adhere strictly to specification requirements for bonding pipe construction. Ensure adhesive application results in minimal overflow when the socket is inserted, which should be promptly cleaned off. Apply glue from the socket interior outward to avoid unwanted flow into the pipe internals.
4. Considerations for Thermal Expansion and Contraction of Pipes
With a thermal expansion coefficient of 0.07mm (m · ºC), PVC-UH water supply pipes expand more than traditional materials. Account for temperature-induced longitudinal deformation, especially in systems utilizing surface water sources.
Owing to the versatile scalability of the rubber ring connecting pipe interface, the issue of expansion or contraction is effortlessly mitigated. However, when it comes to bonded pipes-especially the open type-post-bonding, the interface becomes rigid, lacking flexibility. Without installing expansion joints, the immense pressure from expansion or contraction could severely impact the pipe structure or fittings.
Explore a world of connection methods with our pipes, offering the flexibility of solvent adhesive, elastic sealing ring, and integrated rubber ring connections. Moreover, these pipes seamlessly connect to other varieties such as cast iron pipes through the use of flanges or other compatible adapters, providing a comprehensive solution for diverse piping needs.
Effortless Connection Program: Begin by cleaning the working face meticulously ---- Next, apply a lubricant generously ---- Finally, ensure a precise counterpart insertion for optimal performance.
1. Prior to installation, meticulously verify the quality of pipes, fittings, and rubber rings. Ensure the working face of both the socket and its counterpart are spotless and ready for a seamless assembly.
2. During installation, position the socket strategically towards the direction of incoming water flow, optimizing the system's efficiency and reliability.
3. Generously apply lubricant to both the rubber ring and the insertion section. Ensure the lubricant is used in moderation to prevent it from seeping into the socket groove. This precaution reduces the friction between the rubber ring and the groove wall, thus preventing any potential overturning of the rubber ring. We recommend using detergent and soapy water as lubricants for optimal results.
4. Carefully align the socket ports, ensuring that the pipeline axis remains perfectly straight, thus guaranteeing stability and structural integrity.
5. Equip both sides of the socket with appropriate wire rope sleeves and use a tightener (or hand wrench) to pull them securely into the reticle. For medium-caliber pipes, place square wood at the port and gently knock it into the socket with a mallet for a precise fit.
1,What's your minimum order quantity?
Our minimum order quantity is usually 1 CTN.
2,How long is the delivery cycle?
The delivery time is approximately 15 - 20 days. (If the quantity is less than 10 cartons, it will take about 3 - 5 days.)
3,Where is the port of shipment?
We ship the goods via Tianjin Port.
4,What are your payment terms?
We accept 30% telegraphic transfer as advance payment, 70% payment during the shipment period or 100% letter of credit.
5,How can I contact you?
You can contact us through the trade manager or click on "Contact Supplier" at the bottom to send us an email.
6,Where is your company located?
Our company is located in Cangzhou, Hebei Province, China. You are very welcome to visit us if you'd like.
7,How about the samples?
We can send samples to you. Most samples can be sent to most parts of China for free. If they are sent to other countries, the transportation cost should be borne by your side.
8,Why choose us?
Our products are genuine, of high quality and with competitive prices.
We have cooperated with customers all over the world and have a good understanding of the market.
You will be very satisfied with our after-sales service.
Any questions and feedback will be replied to within a very short time.
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