PP vs PE – Two Very Similar Pipes with Crucial Differences

In the compressed air and pipe systems industry, there is a long list of options. From the equipment designed for industry use to the press fittings that connect everything together, engineers and system builders have the luxury of choice. This is due, in no small part, to the ability of manufacturers in the industry to innovate.

Here, we look at two easy-to-confuse piping types. Just one letter distinguishes PP and PE pipes, but they have several unique characteristics that specifiers must familiarise themselves with. Here, we explain why you should choose one over the other

PP (Polypropylene)

polyethylene pipe

The physical attributes of PP are like PE (polyethylene). However, PP becomes more brittle at lower temperatures and it has poorer resistance to compressor oils than PE.  Nonetheless, polypropylene has one of the highest chemical resistance ratings in the plastics category. Here at Air Energy, we suggest that PP should be used for hot and cold liquids, dairy products and laboratory and reverse osmosis systems.

PP can be used to replace existing pipe systems. Unlike steel piping, PP pipes are resistant to corrosion. At Air Energy, we provide two main kinds of PP piping: the standard neutral pipes and the fibre-reinforced green pipes. A complete selection of PP pipe fittings is also available.

PE (Polyethylene)


MaXair® Compressed Air Pipe systems offer pipes rated at PE100. This means they offer 50 years of reliability when used at 30-degrees Celsius. Air Energy was the pioneer in distributing the highly successful maXair® piping systems. This brand currently exceeds most Australian standards in terms of safety and reliability.

Pipes are crucial for any compressed-air or liquid-movement systems. Choosing the right material is important for long-lasting infrastructure that gets the job done and minimises waste. Get in touch with Air Energy and open a gateway to the most reliable products available on the market today.