| Customization: | Available |
|---|---|
| Material: | PVC |
| Hardness: | Hard Tube |
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Our high-performance rigid polyvinyl chloride (PVC-UH) water supply pipes represent the pinnacle of innovation in water transport. Crafted from premium polyvinyl chloride polymer materials and enhanced with vital additives, these pipes boast an MRS ≥ 25Mpa, precisely extruded and molded. As a groundbreaking advancement beyond traditional PVC-U and PVC-M pipes, our PVC-UH pipes significantly upgrade the mechanical capabilities of both the products and their connections. This evolution ensures unparalleled efficiency and durability in your water supply infrastructure.
The PVC-UH water supply pipe is engineered through an advanced restructuring of the polyvinyl chloride molecular chain. This process endows the product with remarkable attributes: exceptional strength, superior pressure resistance, optimal ring stiffness, and resilience against both internal and external forces. Perfect for pipe gallery installation, these pipes exhibit impressive toughness, with a high modulus, minimal shrinkage, and over 45% ring flexibility. They offer outstanding impact resistance, adeptly accommodating material stress from temperature fluctuations within the gallery. Our built-in plastic inspection wells deliver superior high-pressure sealing, ensuring the integrity of the pipeline system. Enjoy seamless installation, rapid construction, and minimal maintenance costs. Designed to last over 50 years, our pipeline system delivers a highly cost-effective solution with a low investment, maximizing your return on investment.
| 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 Standard, Backfill Soil Quality
1. Trench Excavation: Adherence to Standards
To ensure the utmost integrity of pipeline installation and prevent adverse effects from permafrost conditions, it is imperative to determine trench depth based on comprehensive local data. This meticulous planning prevents pipeline cracks due to bending stress and guarantees optimal backfill operations:
(1) Trench Precision: The trench must maintain a straight alignment. The width at the trench base should be no less than the combined measurement of the pipe's outer diameter plus 0.5 meters, with an overall minimum width of 0.7 meters.
(2) Depth Control: Carefully regulate the groove depth to avoid inconsistencies. If gravel depth exceeds specifications, backfill and compact to the desired level. Challenges such as hard soil or obstacles like stones may necessitate adjustments, potentially causing pipe bends and undue stress on pipe fittings. Such conditions elevate the risk of joint leakage or structural failures upon water pressure increase.
2. Prevention of Permafrost Foundation Issues: To avert trench settlement, particularly during winter, ensure that the pipe trench rests on untouched soil or compacted ground post-grooving. High soil moisture can lead to permafrost melting and foundation sinking, resulting in pipe distortion. Such conditions may cause joint separation or severe pipe rupture.
3. Winter Pipeline Bonding: Compliance with Regulations
The PVC-UH pipe adhesive, primarily made of PVC-UH solvent, operates by expanding or dissolving the pipe's surface, creating a unified bond under extrusion pressure during insertion. As the solvent evaporates, a robust solid forms, ensuring the bond meets pressure requirements without compromising substrate strength.
Adhesive Application: Use the precise amount of adhesive to ensure sealing and strength without overuse, which may cause corrosion or weakening of the pipe. Low temperatures during construction slow adhesive evaporation, increasing penetration and risking wall integrity. Hence, careful adherence to specifications is crucial to avoid accidents.
To achieve proper bonding, adhere strictly to specification guidelines. The bonding agent should slightly overflow upon insertion, with excess promptly wiped away. Apply adhesive from inside out within the socket to prevent interior flow and ensure a secure bond.
4. Thermal Expansion and Contraction of Pipes
PVC-UH pipes exhibit a thermal expansion coefficient of 0.07mm (m · ºC), surpassing that of traditional pipes. Be vigilant of temperature-induced longitudinal deformation, particularly in systems sourcing water from surface bodies.
The adaptable nature of rubber ring connected pipe interfaces means expansion concerns are minimal. However, in bonded pipes, and particularly for open configurations, the post-bonding interface remains rigid, restricting any expansion or contraction. Without an expansion joint, the considerable stress from expansion or contraction might impact the pipe or its fittings adversely.
Pipe connection methodologies comprise solvent adhesive, elastic sealing rings, and integrated rubber ring connections. Furthermore, the versatility of these methods allows connection to other pipe varieties, like cast iron pipes, using flanges or suitable adapters.
Streamlined Connection Protocol: Clean the operational surface ----- Apply lubricant ----- Ensure precise insertion alignment
1. Prior to installation, ensure rigorous quality inspection of pipes, fittings, and rubber rings. Make sure to meticulously clean the working surfaces of both the socket and its counterpart.
2. During pipe installation, orient the socket in the direction from which the water is incoming.
3. Generously apply lubricant on both the rubber ring and the insertion segment. It is crucial to use an appropriate lubricant amount to prevent it from seeping into the socket groove, which could reduce friction between the rubber ring and the groove wall, potentially causing ring misalignment. Commonly used lubricants include detergents and soapy water.
4. Ensure that socket ports are perfectly aligned, maintaining a straight axis for the pipeline.
5. Appropriately fit wire rope sleeves on each side of the socket, and use a tightener (or hand wrench) to pull them into alignment. For medium-caliber pipes, use square wood padding at the port, and gently drive it into the socket with a mallet for a secure 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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