| 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 represent the pinnacle of modern piping solutions. Crafted from superior polyvinyl chloride polymer materials, enhanced with essential additives, each pipe is precision-extruded and expertly molded to meet a minimum required strength (MRS) of ≥ 25Mpa. As the forefront of innovative water supply technology, these pipes not only enhance the mechanical properties of traditional PVC-U and PVC-M variants but also redefine the standards for pipe connection durability, ensuring unmatched reliability for your water supply needs.
Revolutionizing the industry, the PVC-UH water supply pipe boasts an advanced molecular chain structure, providing unparalleled strength and pressure resistance. Designed to excel in pipe gallery installations, these pipes offer exceptional ring stiffness and pressure performance, both internally and externally. With a remarkable 45% ring flexibility and superior impact resistance, they adeptly manage material stress from temperature fluctuations. Engineered for convenience, they incorporate built-in plastic inspection wells for high-pressure sealing, guaranteeing secure pipeline systems. Installation is a breeze, leading to rapid construction and minimal maintenance costs. Designed for a lifespan exceeding 50 years, these pipes promise low investment with outstanding cost-effectiveness, setting a new benchmark in the water supply industry.
| 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. Adherence to Trench Excavation Standards
To ensure the integrity of your pipeline installation and avoid laying pipes within the hazardous permafrost layer, trench depths must be carefully determined based on comprehensive local data analysis. Proper backfilling and tamping procedures are essential to prevent pipelines and interfaces from succumbing to bending stresses and potential cracks.
(1) Keep trenches straight with a minimum bottom width of the pipe's outer diameter plus 0.5m, ensuring an overall width of no less than 0.7m for optimal installation.
(2) Precisely control trench bottom depth. Excessive gravel depth must be backfilled and compacted to meet specified levels. Encountering hard soil or obstacles like stones requires careful trench maneuvering to avoid curvature that can compromise pipe integrity. Incorrect trench depth or curvature can induce bending stress on the pipeline, potentially leading to joint leaks or ruptures under pressure.
2. Preventing Permafrost Foundation Risks and Pipe Trench Settlement: In winter construction, ensure that the pipe trench base rests on undisturbed soil or compacted backfill to avoid settling. If the ground is moist and not compacted, rising temperatures can melt permafrost, causing subsidence and pipe deformation with consequential joint failures.
3. Winter Pipeline Bonding Must Follow Regulations
The PVC-UH tube adhesive predominantly contains a PVC-UH solvent. During bonding, adhesive applied to both the socket's inner and outer surfaces causes the material to expand or dissolve. As the socket is inserted, pressure merges these surfaces into a solid bond. Post-volatilization, the adhesive strengthens, ensuring pressure resistance without compromising the substrate.
Proper adhesive quantity is critical. Insufficient amounts risk compromising seal integrity and strength, while excess adhesive can lead to corrosion and softening, increasing the likelihood of cracks under pressure. Low temperatures exacerbate these issues by slowing solvent evaporation, resulting in deeper wall penetration and reduced strength.
Thus, strict adherence to bonding specifications is imperative. Apply sufficient bonding agent to ensure slight overflow at the interface, promptly cleaning any excess. When applying within the socket, start from the inside to avoid adhesive intrusion on inner surfaces.
4. Managing Thermal Expansion and Contraction of Pipes
With a thermal expansion coefficient of 0.07mm (m · ºC), PVC-UH pipes exhibit greater expansion than traditional materials. It's crucial to consider longitudinal deformations due to temperature variations, especially in systems utilizing surface water sources.
The elasticity of the rubber ring connecting pipe interface significantly enhances adaptability, ensuring that issues related to rigidity are effortlessly mitigated. Nevertheless, with bonded pipes, and notably open pipes, the interfaces become inflexible post-bonding, unable to expand or contract. Without proper expansion joints, significant stress from thermal changes could potentially impact the pipe's structure or its fittings adversely.
Our piping systems embrace versatile connection methodologies including solvent adhesive, elastic sealing rings, and integrated rubber ring connections. Furthermore, these pipes exhibit seamless compatibility with diverse materials, such as cast iron pipes, via flanges or other suitable adapters, ensuring universal applicability and convenience in any setting.
Connection protocol: meticulously clean the working surface ---- liberally apply lubricant ---- ensure precise counterpart insertion for optimal results.
1. Prior to installation, it is imperative to meticulously inspect the quality of the pipes, fittings, and rubber rings. Ensure that the socket and its corresponding working face are thoroughly cleaned, setting a pristine foundation for seamless installation.
2. During the installation of pipes, it is a standard practice to orient the socket in the direction of the incoming water flow, optimizing efficiency and ensuring operational integrity.
3. Generously apply lubricant to both the rubber ring and the insertion part. It is crucial to apply the lubricant in a controlled manner to prevent it from seeping into the socket groove, which could reduce friction and potentially cause the rubber ring to overturn. Ideal lubricants include detergent and soapy water for effective results.
4. Ensure that socket ports are perfectly aligned and maintain a straight pipeline axis for guaranteed stability and performance.
5. Utilize appropriate wire rope sleeves on both sides of the socket and draw them into the reticle using a tightener or hand wrench. For medium-caliber pipes, align and protect the port with square wood and gently secure it into the socket using a mallet to ensure a robust connection.
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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