Our advanced PVC pressure systems are extensively utilized for drinking water, recycled water, sewage management, and gas distribution, ensuring safe and reliable transportation across various applications.
At DHPI, we take immense pride in manufacturing an all-encompassing range of superior-quality PVC pressure pipes and fittings. By leveraging the finest raw materials and industry-leading best practices, we deliver products that set the standard for excellence.
PVC-UH, an enhanced version of PVC-U, comes in a variety of colors tailored for specific applications such as water mains, water supply, recycled water, irrigation, and pressure sewerage. These pipes are available in standard 6m lengths featuring spigot and socket ends designed for rubber ring jointing (RRJ), providing a seamless and secure connection.
Introducing our groundbreaking pressure sewage drainage pipe, engineered with a revolutionary online built-in integrated forming steel skeleton sealing connection structure. This innovation ensures quick and effortless installation, guaranteeing optimal installation quality and leak-tight connections. By fundamentally addressing joint leakage issues, our product ensures zero leakage in pipe network operations, coupled with unmatched strength.
The high-performance PVC-UH water supply pipe is crafted with an integrally formed steel skeleton sealing connection structure. This design ensures exceptional connection reliability and tightness, significantly enhancing the pipe's mechanical properties. Our pipes boast high strength, superior pressure tolerance, and remarkable ring stiffness, ideal for outdoor buried installations and pipe gallery setups.
Exceptional Environmental Adaptability: The enhanced toughness of our pipelines enables them to effectively withstand point loads and uneven foundation settlements, making them suitable for non-standard constructions and challenging working conditions.
Outstanding Chemical Corrosion Resistance: Our pipes resist corrosion from a vast range of media, ensuring that soil substances do not degrade the pipeline. With a lifespan of ≥50 years, our pipes offer long-term reliability.
Superior Hydraulic Performance: Designed to absorb impact energy from water pressure fluctuations, our pipes enhance resistance to water hammer, reduce operational risks, improve water supply efficiency, and lower operating costs.
Product Specification
| Nomina diameter dn/mm |
Nominal Pressure PN/Mpa |
| 0.5 |
0.63 |
0.8 |
1.0 |
1.25 |
1.6 |
2.0 |
2.5 |
| Nominal wall thickness en/mm |
| 110 |
- |
2.7 |
3.4 |
4.2 |
5.3 |
6.6 |
8.1 |
10.0 |
| 125 |
- |
3.1 |
3.9 |
4.8 |
6.0 |
7.4 |
9.2 |
11.4 |
| 140 |
- |
3.5 |
4.3 |
5.4 |
6.7 |
8.3 |
10.3 |
12.7 |
| 160 |
- |
4.0 |
4.9 |
6.2 |
7.7 |
9.5 |
11.8 |
14.6 |
| 180 |
- |
4.4 |
5.5 |
6.9 |
8.6 |
10.7 |
13.3 |
16.4 |
| 200 |
- |
4.9 |
6.2 |
7.7 |
9.6 |
11.9 |
14.7 |
18.2 |
| 225 |
- |
5.5 |
6.9 |
8.6 |
10.8 |
13.4 |
16.6 |
20.5 |
| 250 |
- |
6.2 |
7.7 |
9.6 |
11.9 |
14.8 |
18.4 |
22.7 |
| 280 |
- |
6.9 |
8.6 |
10.7 |
13.4 |
16.6 |
20.6 |
25.4 |
| 315 |
- |
7.7 |
9.7 |
12.1 |
15.0 |
18.7 |
23.2 |
28.6 |
| 355 |
- |
8.7 |
10.9 |
13.6 |
16.9 |
21.1 |
26.1 |
32.2 |
| 400 |
- |
9.8 |
12.3 |
15.3 |
19.1 |
23.7 |
29.4 |
36.3 |
| 450 |
- |
11.0 |
13.8 |
17.2 |
21.5 |
26.7 |
33.1 |
40.9 |
| 500 |
- |
12.3 |
15.3 |
19.1 |
23.9 |
29.7 |
36.8 |
45.4 |
| 560 |
- |
13.7 |
17.2 |
21.4 |
26.7 |
33.2 |
41.2 |
- |
| 630 |
- |
15.4 |
19.3 |
24.1 |
30.0 |
37.4 |
46.3 |
- |
| 710 |
- |
17.4 |
21.8 |
27.2 |
33.9 |
42.1 |
52.2 |
- |
| 800 |
15.7 |
19.6 |
24.5 |
30.6 |
38.1 |
47.4 |
- |
- |
| 900 |
17.6 |
22.0 |
27.6 |
34.4 |
42.9 |
53.3 |
- |
- |
| 1000 |
19.6 |
24.5 |
30.6 |
38.2 |
47.7 |
- |
- |
- |
| 1200 |
23.5 |
29.4 |
36.7 |
45.9 |
- |
- |
- |
- |
| 1400 |
27.4 |
34.3 |
42.9 |
53.5 |
- |
- |
- |
- |
| 1600 |
31.3 |
39.2 |
49.0 |
- |
- |
- |
- |
- |
Solvent Socket Bonding Type
Solvent Socket Bonding Type: DN20-DN50 Caliber
Elastic Socket Sealing Ring
For calibers ranging from DN63 to DN225, you have the option to choose between solvent socket bonding or elastic socket sealing ring.
For calibers DN225 and above, elastic socket sealing rings are used; the steel skeleton rubber ring range encompasses 110-1200mm.
Shandong Donghong Pipe Industry Co., Ltd. (referred to as: Donghong Co., Ltd., stock code: 603856) stands proudly in Qufu, China, the revered hometown of Confucius. As a leading figure in engineering pipeline manufacturing, Donghong Co., Ltd. excels as a distinguished service provider and general contractor. Our core expertise spans across four critical categories of functional and customized pipelines: innovative solutions for rainwater and sewage diversion, cutting-edge municipal area piping, robust industrial and mining area pipelines, and specialized pipelines for national key engineering projects. We have meticulously constructed an industrial ecosystem involving design institutes, financial institutions, port logistics, construction units, and both upstream and downstream enterprises. At Donghong Co., Ltd., we are passionately dedicated to becoming a global frontrunner in comprehensive pipeline system solutions, revolutionizing human life with intelligent pipelines and ensuring perpetual safety in pipeline transportation.
On November 6, 2017, Donghong Pipe Industry proudly marked a milestone by being listed on the prestigious Shanghai Stock Exchange, emerging as the first plastic pipe industry company to achieve this distinguished recognition on the main board!
Demonstrating excellence and credibility, the Donghong Pipe Industry Testing Center has been esteemed with the national CNAS testing center accreditation by the National Standards and Accreditation Committee.
Our state-of-the-art factory boasts a large storage bin, fully automatic centralized mixing, blending, and transfer system. This advanced setup facilitates closed management of raw materials from production to extruder entry, effectively preventing secondary contamination and ensuring unparalleled product quality.
Donghong has forged strategic alliances with over five 5A-level logistics powerhouses, underpinned by years of rich transportation expertise. By seamlessly integrating automobile transport, railway logistics, and port shipping, we ensure unparalleled service regardless of extreme temperatures or challenging, remote locations. Our robust and agile transportation strategy guarantees that every order is expediently and securely delivered to your site, promising utmost reliability and efficiency.
Donghong continuously enhances its service details by implementing a comprehensive 9S worry-free service system. This dedication ensures that customers from any corner of the globe can utilize Donghong products with unmatched ease and absolute safety.
| Full technical support from an expert team |
Answers to product technical questions |
Construction and installation guidance, material budget |
1. Does your product comply with international standards?
Our products have passed the CE, BV, ISO, and WRAS certifications, with all metrics exceeding standard requirements. Feel free to let us know the national standard you need, and we will verify or test it accordingly.
2. What kinds of services do you offer?
As a manufacturing factory, we provide pipe products, pipe fittings, packaging, and shipping services. As a professional consultancy, we offer project consulting advice, pipe system solutions, and design suggestions. As an engineering-focused enterprise, we provide pipeline contracting services, pipe repair services, and free maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we offer customization in material, specification, logo, packaging, connection methods, and more. Our professional team can also provide solution suggestions for your specific projects, with numerous successful cases to our credit.
4. What are your terms of payment?
We accept T/T or L/C at sight.
5. How can you guarantee the quality of the goods you offer?
We warmly welcome all customers to visit our company and inspect our goods firsthand. We can also conduct stringent tests as required by the customer before the order. Additionally, prior to bulk production, we can dispatch samples for customers to perform their own quality tests.
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