PP pipes and fittings for internal sewers - TeraPlast

PP pipes and fittings for internal sewers

The PP internal sewage systems were among the first modern plastic systems that have entered on the Romanian market after 1990.

The new system with PP pipes and fittings with socket and gasket brought a major change especially due to simple installation but also due to the physicochemical properties of the polypropylene.

Polypropylene is a thermoplastic synthetic resin with a lower density than polyethylene but, with a higher mechanical strength, a higher melting point and a better dimensional stability. It is a colourless and translucent thermoplastic product with good mechanical, dielectric and electrical insulation properties as well as with a high resistance to chemical agents.


The PP pipes and fittings system with socket and gasket is used especially for internal sewage and ventilation systems. The high resistance to corrosion and to chemical agents recommends this system not only for residential use but also for industrial use in the chemistry or pharmaceutical industry.

The maximum temperature of the wastewater transported through the PP pipe systems is up to 95°C for short periods of time.

PP pipes and fittings are produced through extrusion, namely through the injection of PP granules mixed with dyes, filling materials, stabilizers and friction additions.

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The sealing is done using synthetic rubber gaskets with a long lifetime, which are mounted in the profiled element of the pipe and fittings’ socket. The sealing is ensured even in case of pipe deformation within acceptable limits or in case of its movement. The pipes and the fittings are delivered with gasket.

The PP internal sewage system offered by TeraPlast is a complete and diversified pipes and fittings system manufactured in accordance with SR-EN 1451-1/2 and SF98/2017.

In what concerns the size, the range of diameters for the PP pipes and fittings offered by Teraplast varies between 32 and 125 mm for pipes and between 32 and 160 mm for fittings

The estimated lifetime of the PP pipes and fittings system is of minimum 50 years.

Features and advantages of the PP pipes and fittings system for internal sewage


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