| Customization: | Available |
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| Material: | PVC |
| Hardness: | Hard Tube |
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Introducing our cutting-edge High-Performance Rigid Polyvinyl Chloride (PVC-UH) Water Supply Pipes! These pipes are crafted from superior polyvinyl chloride polymer materials, enhanced with essential additives to achieve outstanding performance. With a minimum required strength (MRS) of 25Mpa, each pipe is meticulously extruded and molded to perfection. As an innovative advancement over traditional PVC-U and PVC-M pipes, our PVC-UH pipes boast enhanced mechanical properties and superior pipe connections.
Our PVC-UH Water Supply Pipe is engineered with an advanced molecular chain structure, delivering exceptional strength and high-pressure tolerance. With impressive ring stiffness and resistance to both internal and external pressures, these pipes are ideal for pipe gallery installations. They offer remarkable toughness, a high modulus, minimal shrinkage, and an exceptional ring flexibility of over 45%, providing superior impact resistance. Perfect for mitigating material stress from temperature fluctuations within pipe galleries, these pipes integrate built-in plastic inspection wells, ensuring robust high-pressure sealing for an unwavering pipeline system seal. Experience the benefits of easy installation, rapid construction, and low maintenance costs. Our pipeline systems are designed for longevity, with an impressive life span exceeding 50 years, providing a low-investment yet highly cost-effective solution.
| 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 |
Exemplary Standards for PVC-UH Water Supply Pipe Trench Excavation & Backfill Soil Quality
1. Trench Excavation: Adherence to Industry Standards
To effectively prevent pipelines from entering the permafrost layer, it's crucial that trench excavation depth is carefully determined based on comprehensive examination of local climatic and soil data. This ensures optimal backfill operations, avoiding potential cracking of pipelines and interfaces due to detrimental bending stress. Essential considerations include:
(1) Precision in Trench Design: Trenches must be straight with a bottom width no less than the pipe's outer diameter plus 0.5m, and an overall minimum width of 0.7m, ensuring structural integrity.
(2) Depth Management: Maintain consistent trench groove depth. Excessive gravel depth necessitates backfill and compaction to specifications. Encountering hard soil or obstacles such as stones may result in trench curvature or insufficient depth, complicating construction. Such deviations exacerbate bending stress, risking joint leakage, or damage under pressure.
2. Safeguard Against Permafrost Foundation Risks & Trench Settlement: During winter, it's imperative that pipe trenches rest on stable undisturbed soil, or densely compacted backfill. High soil moisture and loose foundations risk settling when permafrost melts, inducing bending stress. This can lead to joint failure and leaks, or in severe cases, pipe rupture.
3. Winter Pipeline Bonding Protocols
Employ PVC-UH adhesive, primarily composed of solvent, to achieve robust bonding. Apply adhesive within and outside the socket, allowing surfaces to expand, merge, and solidify under insertion pressure. Proper adhesive volatilization ensures a hard, durable bond, preserving substrate integrity and pressure-resilience.
Optimal Adhesive Application: Precise adhesive quantity is pivotal. Too little compromises seal and strength; excess leads to pipe corrosion, softening, and potential cracking during water flow or pressurization. Cold weather exacerbates risks by slowing adhesive volatilization, increasing penetration depth, and weakening pipe walls.
Thus, strict compliance with bonding specifications is vital. Ensure minimal overflow of adhesive from the interface, wiping excess clean. Apply glue from inside out in sockets to avert internal flow, preserving pipe and fitting integrity.
4. Managing Thermal Expansion & Contraction of Pipes
The PVC-UH water supply pipes exhibit a thermal expansion coefficient of 0.07mm (m · ºC), outpacing traditional pipes. Careful management of temperature-induced longitudinal deformation is essential, particularly in systems utilizing surface water sources.
Thanks to the adaptability of the rubber ring connecting pipe interface, expansion-related concerns are effectively mitigated. Conversely, bonded pipes, particularly open variants, present a unique challenge; once bonded, these interfaces become inflexible and resist expansion or contraction. Without the inclusion of an expansion joint, any stress resulting from temperature variations or other forces will manifest directly on the pipe or its fittings, potentially causing damage. Therefore, careful consideration is needed in design and implementation to prevent these issues.
There are several innovative methods for connecting pipes, including the use of solvent adhesives, elastic sealing rings, and integrated rubber ring connections. Additionally, you can seamlessly integrate with diverse pipe types, such as cast iron pipes, using flanges or specially designed adapters. This flexibility ensures compatibility and robustness in various applications, enhancing the overall utility and performance of the piping system.
To ensure a secure and reliable connection, follow this procedure: thoroughly clean the working face, apply a liberal coat of lubricant, and proceed with counterpart insertion. This process ensures optimal function and longevity of the connection, providing assurance of continued performance.
1. Prior to installation, it's crucial to meticulously inspect the quality of pipes, fittings, and rubber rings. Additionally, both the socket's working face and the socket itself should be thoroughly cleaned to ensure a flawless installation process that guarantees long-term reliability and performance.
2. During installation, it is standard practice to orient the socket in the direction of water flow. This strategic placement optimizes the efficiency and effectiveness of the water transport system.
3. When applying lubricant to the rubber ring and insertion part, it is important to use an appropriate amount. This prevents excess lubricant from seeping into the socket groove, which could reduce friction and potentially cause the rubber ring to flip. Detergent and soapy water serve as effective lubricants for this purpose, ensuring a smooth and trouble-free insertion process.
4. Ensure that the socket ports are precisely aligned to maintain the straightness of the pipeline axis. This alignment is critical for the integrity and performance of the entire system.
5. Securely place appropriate wire rope sleeves on each side of the socket, using a tightener or hand wrench to pull them into the reticle. For medium-caliber pipes, use square wood to pad the port and a mallet to gently drive the pipe into the socket. This ensures a tight, reliable fit that enhances the system's durability and functionality.
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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