Electrofusion is a method of permanently joining plastic pipes – most commonly polyethylene (PE) pipes – using heat generated through an electrical current. It’s widely used in water, gas and infrastructure pipelines as it creates strong, reliable and leak-free joints.

The process uses specialised electrofusion couplers or fittings. Inside the fitting are embedded electrical heating wires. An electrofusion control unit connects to these fittings using special plugs and this activates an electric current which passes through the wires and heats them.

The heat generated by the resistance in the wires slowly melts the surrounding plastic, both the outer surface of the pipe and the inner surface of the fitting.

As these materials soften, the plastic mixes and bonds at a molecular level. Once the heating cycle is complete, the joint is left to cool and solidify, forming a single, continuous piece of pipe and fitting.

When installed correctly the result is a strong, durable connection that can withstand pressure, ground movement, and long-term use.

To watch a short installation video click here>>>

Installers are required to be PMBWELD302E accredited to perform electrofusion welds in Australia. Curious about becoming accredited?  Talk to Lernna today.