| Customization: | Available |
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| Material: | PVC |
| Hardness: | Hard Tube |
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Experience the next level of innovation with our high-performance rigid polyvinyl chloride (PVC-UH) water supply pipes. Crafted from superior polyvinyl chloride polymer materials, these pipes are enhanced with essential additives and feature an MRS ≥ 25Mpa, expertly extruded and molded. As a cutting-edge solution in water supply technology, our PVC-UH pipes significantly elevate mechanical properties and connection strength, surpassing traditional PVC-U and PVC-M options.
Our PVC-UH water supply pipes stand out by advancing the molecular chain structure of polyvinyl chloride, resulting in exceptional strength and pressure-bearing capabilities. With impressive ring stiffness and the ability to withstand both internal and external pressures, these pipes are ideal for pipe gallery installations. They boast remarkable toughness, high modulus, minimal shrinkage, and over 45% ring flexibility, ensuring excellent impact resistance. This makes them perfect for handling material stress from temperature variations in pipe galleries. Equipped with built-in plastic inspection wells, they offer outstanding high-pressure sealing to maintain system integrity. Installation is a breeze, with swift construction and minimal maintenance costs, delivering a pipeline system that promises over 50 years of reliable service. Enjoy the benefits of low investment with high cost-efficiency, making our PVC-UH pipes a smart choice for sustainable infrastructure.
| 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 |
Regarding the PVC-UH water supply pipe, precise trench excavation is essential and the quality of backfill soil must be prioritized.
1. Ensure trench excavation strictly adheres to established standards to guarantee the integrity of the installation.
To avoid pipeline placement within permafrost zones, trench depth should be carefully calculated using local geological data. Properly executed backfilling and tamping are crucial to prevent pipeline and interface cracking due to bending stress, requiring that:
(1) Trenches must remain straight. The bottom width should exceed the pipe's outer diameter by at least 0.5m, with a total width no less than 0.7m.
(2) Precisely control the trench depth to avoid excess or insufficient digging. Excess gravel depth requires backfilling and compacting to the specified level. Encountering hard soil or obstacles, like stones, may tempt altering the trench path or depth, creating curves or insufficient depth, leading to potential pipe bending, stressing joints and sockets. This, alongside rising water pressure, could provoke joint leakage or rupture of pipes and fittings.
2. Evade permafrost foundations and prevent trench settlement. During winter builds, ensure the pipe trench bottom lies on untouched soil or adequately compacted ground post-backfilling. Otherwise, high soil moisture and a non-dense foundation may result in permafrost melting as temperatures increase over the next year, leading to foundation settlement. This can bend pipes, break joints, add stress, and result in leaks or pipe ruptures.
3. Winter pipeline bonding must comply with stringent regulations for maximum efficacy.
PVC-UH tube adhesive, predominantly a PVC-UH solvent, operates by applying glue on socket surfaces, expanding or dissolving them. During socket insertion, extrusive pressure fuses these surfaces into a cohesive unit. Solvent evaporation restores surface solidity, maintaining substrate strength and meeting pressure requirements.
Precise adhesive application is critical. Insufficient amounts compromise seal and strength. Excessive quantities may lead to flow along pipe walls post-insertion, causing corrosion and softening, risking cracks under water or pressure. Low temperatures exacerbate this, as slower adhesive evaporation deepens wall penetration, weakening the structure.
Thus, follow specifications diligently for pipe bonding. The bonding agent should slightly overflow when sockets are inserted, which should be promptly cleaned. Apply glue from the socket interior outward to avoid inner wall contamination.
4. Pipe thermal expansion and contraction considerations
With a thermal expansion coefficient of 0.07mm (m·ºC), PVC-UH pipes expand more than traditional counterparts. Monitor temperature-induced longitudinal deformation, notably in systems using surface water sources.
Thanks to the remarkable scalability of the rubber ring connecting pipe interface, potential issues can easily be mitigated. However, when it comes to bonded pipes-especially those that are open-the interface post-bonding becomes rigid, neither expanding nor contracting. In the absence of an expansion joint, the enormous stress from expansion or contraction may affect the pipe itself or its fittings adversely.
There are versatile pipe connection methods to suit different needs, including solvent adhesive, elastic sealing ring, and an integrated rubber ring connection. Furthermore, these pipes offer compatibility with other types of pipes such as cast iron ones, achievable through the use of flanges or other suitable adapters. This flexibility ensures a seamless and secure connection tailored to various requirements.
Engage in this straightforward connection process: start with cleaning the working face, proceed to brush on lubricant, and finally, achieve a perfect match with counterpart insertion. This method ensures a reliable connection every time.
1. Prior to commencing installation, it is crucial to thoroughly inspect the quality of pipes, fittings, and rubber rings. Ensure the working faces of both the socket and its counterpart are impeccably clean.
2. During the installation process, position the socket such that it faces the direction from which water will be incoming, ensuring optimal flow and functionality.
3. Generously apply a suitable lubricant to both the rubber ring and insertion part, while ensuring the amount is just right to prevent overflow into the socket groove. This reduces the friction between the rubber ring and the groove wall, preventing the rubber ring from overturning. Detergents and soapy water are ideal lubricants for this process.
4. Ensure that the socket ports are perfectly aligned, maintaining the pipeline axis in a straight line. This precision guarantees a secure and effective connection.
5. Utilize appropriate wire rope sleeves on either side of the socket, pulling them together with a tightener or hand wrench. For medium-sized pipes, square wood padding can be utilized at the port, and a mallet may be used to gently knock it into the socket, ensuring a snug 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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