verbundrohr, pipe system and use of a liquid crystal polymer in a verbundrohr pipes

摘要

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. The composite pipe is intended for inclusion in a pipe system that includes insulation around the pipe in order to lower heat losses from the composite pipe to the surroundings. The composite pipe includes a base pipe of polymer material, preferably a cross-linked polyethylene. The base pipe (2) also includes a layer (6) which forms a barrier against the diffusion of water through the composite pipe (1) at hot water temperatures, the barrier layer (6) being a layer of liquid crystal polymer. The invention also relates to a pipe system and to the use of a composite pipe for conducting water.