Hot Selling Pipes | |||
Steel Wire Reinforced PE Composite Pipe | Fiberglass Steel Wire Reinforced Composite Pipe | HDPE Pipe | PVC Pipe |
Antistatic Flame Redartant Composite Pipe for Mining | Anti-corrosion Composite Pipe | Thermal Insulated Pipe | Big Carliber Composite Steel Pipe |
At DHPI, we take pride in manufacturing an extensive array of premium PVC pressure pipes and fittings. Our commitment to using only the highest quality raw materials and industry-leading practices guarantees exceptional and enduring results.
Introducing our advanced PVC-UH range, an upgraded solution to traditional PVC-U. Available in various colors to suit different applications, it excels in water mains, water supply, recycled water, irrigation, and pressure sewerage. Each pipe is supplied in standard 6m lengths with spigot and socket ends for efficient rubber ring jointing (RRJ).



Exceptional Chemical Corrosion Resistance: Our pipes resist a variety of corrosive media, ensuring that soil substances do not degrade the pipeline. With a lifespan of over 50 years, our pipelines promise long-term reliability and durability.
Superior Hydraulic Performance: Our pipes absorb the impact energy from water pressure fluctuations, boosting resistance to water hammer. This enhancement reduces operational risks, improves water supply efficiency, and lowers operating costs, ensuring optimal performance.




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 | - | - | - | - | - |




For DN225 calibers and above, utilize elastic socket sealing rings. Our steel skeleton rubber ring range is extensive, covering diameters from 110-2000mm.













Full technical support from an expert team | Answers to product technical questions | Construction and installation guidance, material budget |
1. Does your product meet international standards?
Our products have passed CE, BV, ISO, and WARS certifications, with all metrics exceeding standard requirements. Feel free to inform us of the national standard you need, and we will verify or test it for you.
2. What kind of services do you offer?
As a manufacturing factory, we provide pipe products, pipe fittings, packaging, and shipping. As a professional consulting company, we offer project consulting advice, pipe system solutions, and design suggestions. Additionally, as an engineering-focused enterprise, we offer pipeline contractor services, pipe repair services, and complimentary maintenance guidance.
3. Do you support OEM/ODM services?
Yes, we offer customization in materials, specifications, logos, packaging, connection methods, and more. Our professional team can also provide tailored solutions for your specific projects, with a proven track record of successful cases.
4. What are your terms of payment?
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 rigorous tests as per your requirements before placing an order. Additionally, we can dispatch samples before bulk production for you to perform your own tests and ensure product qualification.