In the field of plastic welding is a homogenous connection of two smilar materials. Two elements of the same material are connected directly - without adding any means of connection.

The following fusion techniques are applied for hot and cold potable water supplies:

Heating element socket welding

Electrofusion socket welding

Butt welding

Heating element socket welding On heating element socket welding pipe and fittings are fused overlapping - and without application of welding fillers. The heating element is necessary for heating the outer pipe and inner fitting diameter. The heating element socket welding can be carried out either with a welding machine or with a welding device.   Two pipes are always connected with a fitting, like socket, elbow or tee.  Fitting, pipe and heating tool must be coordinated in size by keeping the standard.

The electro-fusion fittings, applied for electro socket welding, are equipped with integrated resistance wires, which are current-carrying during the fusion process. By this the inner diameter of the socket and the outer diameter of the pipe are heated up to welding temperature resulting in a melting mass on both parts. After their cooling there is an inseparable homogeneous connection. The necessary electrical energy is automatically supplied by suitable electro-fusion devices. Environmental influences are considered by the barcode and temperature compensation of the electro-fusion device.

While heating element butt-welding the connection surfaces of the parts to be welded are levelled under pressure at the heating element, then heated up to welding temperature with reduced pressure and after removal of the heating element joint under pressure.