Pipe Weight

The extremely low weight of EnviroGravity® Pipes allows a simpler and faster installation of the pipes, as in most cases no heavy machinery is necessary for the installation and handling of the pipes. Most of the handling can be done by an excavator on-site.


EnviroGravity® Pipes do not require large butt welding machines as they are joined either by rubber ring joint or electro-fusion.


The installation time is faster than other materials as the standard pipe lengths are between 5.5 to 6 meters long. Fewer lifts mean unloading and loading the pipes into position saves even more time.


As it is possible to nest these pipes, transportation costs can be reduced.

See how many EnviroGravity® pipes you can fit per load without nesting.

Chemical and Corrosion Resistance

EnviroGravity® Pipes which are manufactured from High Density Polyethylene (HDPE) have excellent resistance internally and externally to protect against aggressive soils and chemicals.

Search our Chemical Resistance Database.

Homogenous Piping

EnviroGravity® Pipes and fittings are made of the same material and jointed to one homogenous piece. Not even connections between the pieces pose a weak spot in the piping as they are joined by a rubber ring or electro-fusion water tight joint.

Effective Roughness

Due to its low roughness as shown in the above graph there is almost no accumulation on the pipe bottom and EnviroGravity® Pipes have the ability to self purify. Low roughness has an important economic advantage as maintenance expenditure is kept to a minimum. Due to the low roughness the hydraulic properties are improved and smaller diameters are required compared to conventional pipe materials with the same flow rate. EnviroGravity® pipes convey flows up to 17% greater than concrete pipes, and up to 60%better than corrugated steel pipes.

Abrasion Resistance


Polyethylene pipes are among the most abrasion resistant pipes. This has been tested in the Darmstadt procedure and the results are shown in the diagram above and support the quality of polyethylene and polypropylene pipes.


Commonly most natural materials and other plastics are degraded by weathering effects, particularly by the combined impact of short-wave ultraviolet radiation in sunlight and atmospheric oxygen.

Black polyethylene pipes are permanently resistant to atmospheric corrosion and UV radiation, as the polyethylene used contains carbon black which acts as both a pigment and an ultra violet stabiliser. Thus the pipes can be used and stored outside without the pipe material being damaged.

Resistance to Micro Organisms

Polyethylene is not nutrient media for bacteria, fungi and spores, so that the material is resistant to all forms of microbial attack as well as both sulphurous acid and sulphates.