| Customization: | Available |
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| Material: | PVC |
| Hardness: | Hard Tube |
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Introducing our high-performance rigid polyvinyl chloride (PVC-UH) water supply pipes, expertly crafted from superior polyvinyl chloride polymer materials and enhanced with essential additives. These pipes boast a remarkable MRS ≥ 25Mpa, achieved through advanced extrusion and molding techniques. This innovative product marks a significant evolution in water supply solutions, offering enhancements over traditional PVC-U and PVC-M pipes by elevating mechanical properties. These pipes not only promise stronger and more reliable connections but also set a new standard in durability and performance for global water transport needs.
Our state-of-the-art PVC-UH water supply pipes are engineered by refining the molecular chain structure of polyvinyl chloride, resulting in exceptional strength and high pressure-bearing capabilities. With impressive ring stiffness and resilience to both internal and external pressures, these pipes are ideal for pipe gallery installations. They offer outstanding toughness, a high modulus, minimal shrinkage, and possess over 45% ring flexibility. Their superior impact resistance can competently accommodate material stress from temperature fluctuations within pipe galleries. Moreover, the integrated plastic inspection wells ensure high-pressure sealing performance, guaranteeing system integrity. Effortless installation and rapid construction, paired with low maintenance costs, make these pipes a cost-effective choice. Designed for over 50 years of service life, they represent a smart investment for sustainable infrastructure development, combining affordability with unparalleled efficiency.
| 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 |
Standard Protocols for Excavation and Soil Backfill in PVC-UH Water Pipe Installation
1. Adherence to Trench Excavation Standards
To avert laying pipes in the perma-frost, trench depths should be tailored based on local insights. Ensure backfill is correctly handled and compacted to prevent pipeline or joint interface fractures due to bending stresses. It's crucial that:
(1) Maintain trench straightness. The trench's base width should exceed the pipe's exterior diameter by at least 0.5m, with a minimum total width of 0.7m.
(2) The groove's depth must be meticulously controlled-neither too deep nor too shallow. Excessive gravel depth requires backfill and compaction to the prescribed level. In hard soil or when obstacles like stones arise, construction workers may curve the trench or minimize the curve's radius to ease construction. However, insufficient trench depth can lead to pipe deformation post-installation, exposing pipes, fittings, and sockets to undue stress. An increase in water pressure may result in joint leaks or catastrophic failures of pipes and fittings.
2. Safeguarding Against Permafrost and Trench Settling. During winter projects, ensure trenches rest on undisturbed soil or densified ground post-backfilling. High soil moisture content and loose foundations might thaw with rising temperatures, causing trench foundation settling, pipe sagging, and joint breakage due to bending stress. Light shifts might cause joint separations and leaks, whereas severe movements could rupture pipes.
3. Winter Adhesive Application Protocols
PVC-UH pipe adhesives, primarily comprising PVC-UH solvent, work by applying adhesive to both the socket's inner and outer surfaces. This facilitates surface expansion or dissolution, allowing the two expanded surfaces to fuse solidly under pressure during socket insertion. As the solvent evaporates, the once-dissolved surface rehardens, maintaining the base material's strength so the adhesive bond withstands pressure demands.
Optimal adhesive levels are critical-not too sparse to jeopardize sealing or strength, nor too abundant to risk overflow that corrodes or softens pipe walls, leading to potential cracks upon water or pressure introduction. Cold weather exacerbates risks, as low temperatures slow solvent evaporation, resulting in deeper penetration and localized strength loss.
Follow strict specification guidelines for bonding. Ensure adhesive slightly overflows the interface edge post-socket insertion, then clean overflow with a cloth. Apply adhesive from the inside out in sockets to prevent internal pipe or fitting contamination.
4. Managing Pipe Thermal Expansion and Contraction
With a thermal expansion coefficient of 0.07mm (m·ºC), PVC-UH pipes expand more than traditional pipes. It's vital to monitor temperature-induced longitudinal changes, particularly in systems using surface water sources.
The adaptability and flexibility of the rubber ring connecting pipe interface eliminate concerns of expansion. Yet, when it comes to bonded pipes, particularly those with an open configuration, the interface post-bonding exhibits rigidity, lacking the ability to either expand or contract. Should there be an absence of expansion joints, the considerable stresses that arise from material expansion or contraction exert pressure on the pipe or fittings themselves.
Our piping systems offer diverse and reliable connection methodologies: solvent adhesive for a secure bond, elastic sealing rings for flexibility, and integrated rubber ring connections for seamless integration. Additionally, adaptability is a hallmark of our pipes, which can be seamlessly linked to other types of piping, including traditional cast iron pipes, using flanges or various suitable adapters.
Guideline for Efficient Connections: Begin with a meticulous cleaning of the working surface ----- Apply a generous amount of lubricant ----- Align and insert with precision.
1. Prior to embarking on the installation process, ensure thorough inspection of the pipe quality, fittings, and rubber rings. It is essential to meticulously clean the working surfaces of both the socket and socket connectors.
2. During the installation phase, ensure the socket orientation faces the oncoming water flow to optimize performance and prevent undue pressure.
3. Generously apply lubricant to both the rubber ring and the insertion area to facilitate smooth engagement. Ensure the lubricant is used optimally to prevent it from seeping into the socket groove, which could inadvertently increase friction and cause the rubber ring to dislodge. Typically, detergent or soapy water serves as the preferred lubricant.
4. Ensure precise alignment of the socket ports while maintaining a straight pipeline axis for optimal fluid dynamics and structural integrity.
5. Equip the socket's sides with suitable wire rope sleeves, using a tightener or hand wrench to secure them firmly into place. For pipes of medium diameter, pad the port with square wood and gently tap it into the socket using a mallet for a secure and stable 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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