In underground lines, loads like surface loads, earth loads, traffic loads, etc as well as subsidence of the earth act on the pipe system. Plastic pipes transfer the resulting point loads and stresses to the ground through deformation. The pipe is thus in an almost stress-free state in the ground and is not exposed to any additional loads. For this reason, plastic pipes are also referred to as “flexible” pipe systems. In contrast, rigid pipe systems e.g. pipes made of stoneware, concrete, cast, etc. have to absorb these stresses in the pipe wall so one should know about everything before they shop pipes and fittings.

High Abrasion Resistance

Sand loads, grit and other solids carried along in the pipe system cause mechanical abrasion on the inner wall of the pipe. Thermoplastic materials are characterized by very high abrasion resistance compared to materials such as concrete, stoneware and GRP. This aspect also has a positive effect on the service life of the pipe systems.

Corrosion Protection

Compared to metallic materials, plastics are distinguished by their corrosion resistance. This advantage comes into play with underground lines, exposed lines as well as in building services.

High Hydraulic Efficiency

Thanks to their smooth inner pipe wall, plastic pipes have very good hydraulic properties. Cargoes carried in sewage, mixed water or surface water channels do not find any adhesion points on the smooth surface. In this way, incrustations are largely avoided and the cleaning effort is minimized.

Lightweight

Plastics are far superior to almost all other materials cast, stoneware, concrete, etc in terms of lightness. Thanks to their low weight, the transport and laying of plastic pipes are much easier and more economical. For example, it is often possible to dispense with the use of lifting devices when laying the pipes depending on the pipe dimensions.

Inexpensive Laying

The laying costs are a significant factor when considering the total costs of a pipeline. Here, too, plastic pipe systems can prove their advantages. There are several reasons why plastic pipes are particularly economical to lay:

The low weight results in low transport costs and less effort in handling

The socket connection can usually be made by hand – no special tools are required

Plastic pipes can be manufactured in greater lengths and, depending on the material and dimensions, also wound into large rolls. This reduces the number of connection points and thus minimizes the installation effort. Thanks to the extensive range of fittings, it is possible to react quickly to the conditions on the construction site, thus minimizing or even preventing downtimes.

Tensile Connection

In addition to the tried and tested push-in socket connection, plastic pipes also offer the option of simply being able to make high-tensile connections. Tensile connections are required, for example, for trenchless installation processes such as horizontal flush drilling, bursting, etc., or for installation in steep terrain.