| Customization: | Available |
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| Material: | PVC |
| Hardness: | Hard Tube |
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Introducing the cutting-edge, high-performance rigid polyvinyl chloride (PVC-UH) water supply pipes! Crafted from top-tier polyvinyl chloride polymer materials and enhanced with essential additives, these pipes boast an impressive MRS ≥ 25Mpa. Expertly extruded and molded, this innovative product redefines water supply systems by elevating the mechanical properties of both the pipes and their connections. With a foundation rooted in traditional PVC-U and PVC-M pipes, our PVC-UH water supply pipes are your solution for a robust and reliable network, ensuring durability and superior performance.
The PVC-UH water supply pipe revolutionizes conventional methods by enhancing the molecular chain structure of polyvinyl chloride. This advancement translates into remarkable attributes: exceptional strength, high-pressure endurance, impressive ring stiffness, and reliable internal and external pressure resistance. Perfect for pipe gallery installations, it exhibits excellent toughness, a high modulus, minimal shrinkage, and exceeds 45% ring flexibility. Its outstanding impact resistance makes it ideal for managing material stress due to temperature fluctuations within the pipe gallery. Integrated with built-in plastic inspection wells, the pipes excel in pressure sealing, ensuring a secure pipeline system. Enjoy the benefits of straightforward installation, rapid construction, and reduced maintenance costs. Designed for a service life exceeding 50 years, our PVC-UH pipes promise low investment and high cost-effectiveness, setting a new standard in the 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 & Backfill Quality
1. Ensuring Perfect Trench Excavation Standards for Pipe Installation
To avoid laying pipelines in permafrost layers, the depth of trench excavation must be determined after thorough analysis of local data. Proper backfilling and tamping are crucial to prevent cracks in pipelines and joints due to bending stress. It is vital that:
(1) Trenches must be perfectly straight. The trench's bottom width should not be less than the pipe's outer diameter plus 0.5m, with a total width of no less than 0.7m to ensure stability and fit.
(2) Maintain precise control over the trench's bottom depth-neither too deep nor too shallow. In instances where gravel is overly deep, backfill and compact to the desired depth. In challenging terrains with hard soil or obstacles like stones, avoid creating curved trenches with small radii or inconsistent depths, as these increase the risk of pipe bending. Such conditions can subject pipes, fittings, and joints to bending stress, potentially causing leaks or ruptures under rising water supply and pressure.
2. Safeguard Against Permafrost Foundations & Trench Settlement. During winter construction, ensure trenches rest on undisturbed soil or compacted ground post-backfilling. High soil moisture and low-density foundations can lead to permafrost melt and foundation sinking in warmer years, causing pipes to bend and joints to break. This could lead to leaks or, in severe cases, pipe ruptures.
3. Adhere to Regulations for Winter Pipeline Bonding
PVC-UH tube adhesive primarily consists of a PVC-UH solvent. The bonding mechanism involves applying adhesive to the inner and outer surfaces of the socket to cause expansion or dissolution. The insertion process squeezes these expanded surfaces together firmly. As the solvent evaporates, the dissolved surfaces solidify again, maintaining substrate strength and ensuring bonding strength meets pressure requirements.
The adhesive quantity must be precise-not too little to compromise sealing or strength, nor too much to risk flowing along the pipe walls, potentially corroding or softening them. This is crucial in low temperatures, where slower adhesive evaporation can deepen wall penetration, weakening strength and increasing the likelihood of accidents.
Thus, pipe bonding must align with specification standards. The adhesive amount should be just enough that slight overflow occurs at the interface edge post-insertion; this excess should be wiped with a cloth. When applying adhesive in sockets, work from the inside out to prevent excess adhesive from entering the pipe or fitting walls.
4. Managing Thermal Expansion & Contraction in Pipes
The thermal expansion coefficient for PVC-UH water supply pipes is 0.07mm (m · ºC), which exceeds traditional pipes. It is essential to account for longitudinal deformation due to temperature variances, particularly in systems using surface water as a source.
The versatility of the rubber ring connecting pipe interface makes expansion concerns negligible. In contrast, bonded pipes, particularly open ones, feature a rigid interface post-bonding, incapable of expansion or contraction. Without an expansion joint, any produced stress from expansion or contraction could intensely impact the pipe or its fittings.
Pipe connection methods are categorized into solvent adhesive, elastic sealing ring, and integrated rubber ring connections. Additionally, it allows for compatibility with other pipe types, like cast iron pipes, through the use of flanges or appropriate adapters.
Connection Procedure: Begin by cleaning the working surface ----- apply a lubricant coating ----- proceed with counterpart insertion.
1. Prior to installation, thoroughly inspect the quality of pipes, fittings, and rubber rings. Ensure that the working face of both the socket and the spigot is meticulously wiped clean.
2. During installation, orient the socket to face the direction from which water will flow.
3. Apply a suitable lubricant generously to the rubber ring and the insertion region. It is vital to control the lubricant amount to prevent overflow into the socket groove, which can minimize friction between the rubber ring and the groove wall, averting an overturn of the rubber ring. Common lubricants include detergent and soapy water.
4. Ensure that the socket ports are perfectly aligned and that the pipeline remains straight along its axis.
5. Place suitable wire rope sleeves at both sides of the socket and draw them into the reticle using a tightener or hand wrench. Medium-caliber pipes can be reinforced by pad porting with square wood, then gently tapped into the socket using 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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