For domestic waste water disposal, the pipes (DN 100-200) must be abrasion and corrosion-resistant as well as resistant to domestic waste water and temperatures of up to 95°C. Due to its extreme stiffness, PP is the preferred material for waste water pipes, especially for larger diameters.
Drainage pipes are required to meet more and more stringent demands imposed for underground drainage. Building drainage systems drain rain water and snowmelts via gutters and downpipes to the main building site drainage. In road construction, the surface water from rain or snowfall is collected and absorbed by drainage systems, thus preventing structural damage and danger to traffic. Pipes with smooth inner surfaces and circular profiles on the outside are in use particularly in road and tunnel construction, but also in building site drainage.
PO pipes are frequently used in railroad track, airport and tunnel construction, where they are exposed to high static and dynamic loads. For bicycle lanes and footpaths, the pipes are made of PE.
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