Polypropylene pipes of the "Standard" type are used for the installation of non-pressure internal sewerage systems with a temperature of permanent drains from 2 ° C to 80 ° C and short-term (within 2 - 3 minutes) drains with a temperature of up to 95 ° C. They are available in diameters of 32, 40, 50 and 110 mm, have a wall thickness of 1.8 or 2.7 mm (only for a diameter of 110 mm) and a length range from 150 mm to 3000 mm.