Non-pressure pipe

Drain, waste and vent pipe as well as stormwater pipe and electrical conduit are manufacturered using either solid wall, structured wall or multilayer construction techniques. Multilayer techniques often incorporate a foamed layer in the core of the PVC pipe.

Modern manufacturing technology enables production of lighter weight PVC pipes than the traditional solid wall PVC pipes, reducing the weight of the pipe by up to 40%. This produces a more material efficient PVC pipe without compromising functionality offering the advantage of having significantly less embodied energy compared to solid wall equivalents.

Recycled PVC is commonly used in the core of multilayer non-pressure pipes, further enhancing their environmental credentials.

Sizes in Australia are typically available up to 600mm (DN600).

Polypropylene has high impact resistance, good stiffness and excellent chemical resistance, making it a good material for the following applications:

  • Stormwater drainage pipelines
  • Estuarine and Ocean outfalls
  • Road culverts
  • Gravity Sewer mains
  • Low head Irrigation
  • Rehabilitation (as liner pipe)
  • Ventilation ducts
  • Leachate collection
  • Stormwater retention systems

PP is typically available in Australia to 900mm (DN900)


Often polyethylene pressure pipe is used for non-pressure applications. There is a range of PE pipe specifically designed for non-pressure applications. Primarily, non-pressure PE is used in sewer, drainage and agricultural applications.

When using pressure pipe for non-pressure applications consult the manufacturer.