BE-15 Pipes and Materials: Welding of Plastic Pipes

Electrofusion welding

Principle

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Image: 

Electrofusion fitting [Source: STEIN Ingenieure GmbH]

1. plug socket to attach the welding connector
2. armature
3. heater coil

The external surface of the pipe and the internal side of the electrofusion fitting are heated up to the required welding temperature by means of resistance wires integrated in the fitting in that they are stressed by electric current. In doing so, both components produce fused material. After the cooling, an inseparable, homogeneous connection is created. This method is used at present for PE-HD and PP pipes.

 

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