PVC-UH Pipe---A new Choice for Urban Pipe Network


In recent years, there have been frequent occurrences of urban pipe bursts and water leakage, which have greatly affected the lives of the people. People have also begun to have higher requirements for the choice of municipal pipelines. Therefore, a new kind of pipe came into being, it is high-performance unplasticized polyvinyl chloride PVC-UH pipe.


Ningbo Fangli Technology Co., Ltd. is a mechanical equipment manufacturer with nearly 30 years’ experiences of plastic pipe extrusion equipment, new environmental protection and new materials equipment. Since its establishment Fangli has been developed based on user’s demands. Through continuous improvement, independent R&D on the core technology and digestion & absorption of advanced technology and other means, we have developed PVC pipe extrusion line, PP-R pipe extrusion line, PE water supply / gas pipe extrusion line, which was recommended by the Chinese Ministry of Construction to replace imported products. We have gained the title of “First-class Brand in Zhejiang Province”.


PVC-UH pipe is a new type of pipe for water supply and drainage, which can be divided into:

Water pipe

Drain pipe


Compared with the traditional PVC-U pipe, it has an extra "H" in the name

"H" means "High Performance"

Represents higher performance

So what are their advantages compared to existing PVC-U pipes?


Ⅰ.  Raw material control is stricter

PVC-UH pipe material adopts a unique green and environmentally friendly lead-free formula, and has been tested by a third-party authoritative testing organization. The sanitary performance of the product fully meets the drinking water sanitation and safety standards. For the production of pipe materials, strict raw material performance testing is implemented to improve product quality from the source.


Ⅱ.  Better pipeline performance

PVC-UH water supply pipe is compared with ordinary PVC-U pipe

1. It adopts unique high-performance and low-density formula, which is lighter and lower in transportation and installation costs;

2. The stress of hydraulic rings of all specifications is 42MPa, an increase of 10.52%;

3. The dichloromethane immersion test time is doubled, and the degree of plasticization of the material is higher;

4. When squashed to 40% of the outer diameter or even higher displacement, the pipe has no cracks and has good toughness;

5. The tensile strength of the pipeline is increased by 10%-20%.


Compared with ordinary PVC-U pipes, PVC-UH sewage and drainage pipes

1. The hydraulic performance test of pipes has been added. At 20, 4 times the nominal pressure, the pressure is maintained for 1 hour without rupture and no leakage. It can also be used as a low-pressure water delivery system pipeline;

2. The ring stiffness grade is set according to the wall thickness, the highest ring stiffness grade is SN16, and the resistance to geological settlement is stronger;

3. When squashed to 40% of the outer diameter or even higher displacement, the pipe has no cracks and has good toughness.


Ⅲ.  The sealing strength is stronger

PVC-UH pipe material adopts super strong steel frame sealing ring and one-time flaring forming process. The steel frame sealing rubber ring and the pipe are integrally formed. The rubber ring made of EPDM material, matched with a built-in steel frame, has a double-hugging and anti-release structure, and has strong anti-aging, anti-compression deformation capabilities, long service life, excellent sealing performance, and can still be maintained within a certain deflection angle. The tightness of the connection can effectively prevent leakage caused by the displacement and vibration of the pipe.


Ⅳ.  Construction efficiency is more efficient

The existing PVC pipes on the market require the construction personnel to manually place the rubber ring or apply glue when connecting. Due to the comprehensive superposition of the different experience of the construction personnel and the uncertain factors of the on-site environment, the rubber ring may be reinstalled during the installation process after the rubber ring is placed. Extrusion often causes looseness and dislocation, uneven glue application, and corrosion to the pipeline, which can easily lead to hidden dangers such as leakage in the subsequent pipeline network during operation.



When the PVC-UH pipe is flared, a special process is used to make the rubber ring and the socket integrally formed. After the construction is completed, the rubber ring is stable and does not shift, and the rubber ring will not fall out under non-violent damage, which improves the installation speed and sealing strength.


As a new type of pipe, PVC-UH also has the characteristics of light weight, low fluid resistance, low comprehensive use cost and long life. It can be widely used in municipal and outdoor water supply piping systems, building water supply piping systems, municipal drainage and sewage drainage, and construction drainage. Sewage, chemical, pharmaceutical sewage systems and other fields.


If you need more information, Ningbo Fangli Technology Co., Ltd. welcomes you to contact for a detailed inquiry, we will provide you with professional technical guidance or equipment procurement suggestions.

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