The present invention relates to a composite pipe for conducting water, preferably for conducting hot water in a district heating system, a heating conduit system or a tap water system.

How to proceed with the cleaning of heating systems

In this connection, the flat heating apparatus has a heating pipe arrangement (12, 14, 28) which extends, in particular, between a flow pipe and return pipe on a plate-like structure (16A).

Further, the automatic brake "Westinghouse" was installed as well as a line for the train heating in trailer vehicles.

The permeable body (120) can be heated sufficient to remove hydrocarbons therefrom such as by using heating conduits (118,126).

The contents of one 16 litre bucket are sufficient for painting approximately 1,200 metres of heating pipe (with a diameter of 5 cm).

Double-wall HVAC ducting systems or silencers can also use expanded material for reducing heat transfer and noise.

Up to 25% of this energy could be saved just by insulating accessible heating and hot-water pipes in old buildings.

The aim of the invention is to allow for greater liberty in design when laying the heating lines and when using said knob plates and to improve shelf life.