Gentex High Density Polyethylene (HDPE) water pipes have been used in applications since 1995. We manufacture pipes in the desired diameters between 20mm to 1000mm and PN6 to PN20 pressure classes, depending on size and application. We use high quality material grade PE 80 and PE 100. The piping complies with the DIN 8074 standard requirements as well as the UNBS (Ugandan bureau of standards) mark.

Because of their perfect elasticity, Gentex PE pipes can turn up to a radius of  20-30 times their outer diameter. Other types of pipes can only turn 11° and 22° by using elbows and fittings. Our pipes can turn these angles without angles or fittings, which results in savings of time and material.

Gentex has successfully manufactured HDPE water pipes that are up to customer’s satisfaction. In addition to the quality of pipe we provide, we also provide technical advice and support for the success of the customers piping project.

Benefits of HDPE Water Pipes

HDPE Pipes and fittings are considered as the best choice for various projects, and has been continuously gaining popularity. The reason for this is due to its number of advantages.

The polyethylene pipe system is connected by electrofusion and butt fusion methods, and the strength of the joint is higher than the strength of the pipes.

The elongation at break of HDPE pipes is generally above 500%. For the uneven settlement of the foundation engineering construction, its adaptability is very strong and the seismic performance is good.

Can bend to a radius 25 times the normal pipe diameter to eliminate many directional changes. Gentex HDPE pipes can be coiled from upto 100mtrs in single length in sizes 20mm to 90mm, 50 mtrs in single length in sizes 110mm.

Low cost system and low maintenance cost can greatly reduce project cocsts. it is made with effective installation in mind.

The buried HDPE pipe is normally used for up to 50 years, this is based extensive testing and data evaluation by professional industries.

Polyethylene pipes are normally joined by heat fusion. Butt weld joints are stringer than the pipe itself and it is virtually leak free. This is a unique joining method which, produces significant cost reductions compared to other materials.

Features of HDPE Water Pipes.


  • Extremely light weight, hence easy to handle and transport.
  • Long Term Resistance to Internal Pressure
  • High UV resistance to scaling and biological build up    
  • High Impact Strength
  • Excellent flow characteristic leading to significant energy savings


  • Low Thermal Conductivity
  • High Thermal Stability


  • Safe for potable water supply.
  • Excellent corrosion resistance and chemical resistance, resulting in a longer life


  • High Abrasion Resistance
  • Low Coefficient of Friction
  • Resistant to Animal Life
  • Low Flammability
  • High Weather ability
Application of HDPE Water Pipe

1. Urban water supply system, landscaping water supply network.

2. Oil and gas flow, gas drainage system.

3. Dredging pipeline engineering ( sand sediment transport ).

4. Underground firefighting system.

5. Cable covering ( HDPE conduit ).

6. Tunnel escape and ventilation engineering pipelines.

7. Industrial raw material conveying pipe network, industrial sewage discharge.

8. Fields of farmland irrigation and aquaculture projects.

HDPE Pipes Connection Methods

Polyethylene pipes and fittings  are connected to each other by melting or mechanical fittings. The HDPE pipes made from materials other than polyethylene can be connected to the outside with squeezed inserts, flanges or other suitable adapters made for the purpose. Electrofusion and Butt Welding are the common combination methods.

Electrofusion Welding

The principle of the electrofusion welding method is to fuse the fusion belt in the plugged parts from the parts to be combined with the Electrofusion Welding Machine by melting a certain part of the outer parts of the two parts by heating them with electricity. HDPE pipes made form grade PE100 material can be welded by this method for pipes with a diameter of 20mm up to 1000mm.

Butt – Welding

This is the most common method used when it comes to joining HDPE pipes and fittings. The joining method is connect the ends of pipes to be welded by using butt welding machine and both ends are pushed toward each other by pressing under a certain temperature. The pipes of up to 1200 mm diameter can be welded by using the welding method.  We supply both manual and hydraulic butt-weld machines.

Gentex HDPE Pipe Specification