The Composition of Composite Pipes

The Composition of Composite Pipes

Composite piping is fast becoming popular for a variety of applications, and part of its appeal lies in the fact that it offers all the features of cross-interlinked polyethylene (PEX) tubing, but with an aluminium lining that makes it far more versatile than single layer PEX piping.. Here’s what goes into making this type of piping and why it’s useful in many different contexts.

How It’s Made

Composite piping has five individual layers, with an internal layer of PexB and aluminium, and an external layer of PexB. These layers are combined with two layers of a strong adhesive. The aluminium layer is joined by the precision laser butt welding, which enables the pipe to be expanded without the risk of the aluminium layer cracking or splitting. Most other composite piping is manufactured with aluminium layers which have been lap joined – offering significantly less flexibility.

Composite piping is used in many different applications, including:

  • Commercial and Residential hot and cold potable water systems
  • HVAC
  • Compressed Air
  • Marine piping systems
  • Floor heating systems
  • Replacing of copper, and polymer piping for hot and cold potable water systems

Characteristics of Composite Piping

The aluminium layer in composite pipes enable the pipe to be bent and to retain the shape intended, much like a metallic pipe.

It also has similar elongation properties to that of copper, which means that it will not elongate or expand longitudally to any great extent when exposed to elevated temperatures.  This is a common problem with single layer pex.

It is light weight and very easy to work with and requires low skill level to process, unlike brazing or welding.

As you can see, composite piping has a myriad of uses. If you’re looking for a sturdy and durable form of piping that’s easy to work with, then you’ve found what you’re looking for.