PP - Polypropylene

PP - Polypropylene

Polypropylene (PP) material :  All Plast Engineering  are able to offer an entire line of plastic piping components, all made of polypropylene homopolymer (PP-H). We supply pipes, fittings (socket and butt fusion fittings), manual and actuated valves. Customers and end users profit not only from the excellent characteristics of PP-H, but also from the unlimited compatibility.

Based on the polymerization conditions and the incorporation of the ethylene copolymer, polypropylenes can be differentiated in PP Homopolymer (PP-H),  PP Random copolymer (PP-R) and PP Block copolymer (PP-B).

The property profiles of the different types of polypropylene also make them suitable for different types of application: PP-H is normally used in industrial pressure pipe systems and for soil and waste water pipes and fittings, based mainly on its good mechanical properties and excellent chemical resistance.                      

PP-R is a well proven material in domestic pressure piping systems for hot and cold water due to its high internal pressure resistance and long lifetime at elevated temperatures.

For buried sewerage and drainage applications, waste water systems and ducting pipe systems, PP-B is the obvious choice. This is mainly due to its high  stiffness, high impact strength, especially at low temperatures, good long term properties and excellent chemical resistance. Based on these properties,  PP-B is commonly used also for other non pressure systems, in particular for soil and waste water piping systems and for cable protection systems.

PP Pipe systems are replacing traditional copper, clay and concrete pipes in hot and cold water distribution, as well as sewage and drainage applications.

Typical applications for polypropylene:

In House

Waste Water
Hot & cold water
Floor and wall heating
Cable conduits



The benefits of PP are:


  • Low pipe weight
  • Easy and safe handling and installation
  • Low encrustation tendency
  • Noise dampening – elastic materials

Durability – expected lifetime of over 100 years

  • Excellent corrosion and chemical resistance
  • Excellent abrasion resistance as well as stress crack resistance
  • High temperature resistance, 60°C – short term up to 90°C
  • Excellent impact properties, also at temperatures below 0°C
  • PP pipe systems have structural integrity, are flexible and tolerate ground movements
  • Considerably lower failure rates compared with traditional materials