Fixing points of pipelines for hot or cold media are constructed in the form of mounting discs which are anchored in concrete, sand, gravel (grit, shingle), rock (stone) or earth. The pipelines consist of a metallic inner pipe (14), an outer pipe (16) made of plastic or Eternit and an insulating material (26) which fills the cavity between the pipes. The mounting disc (10), which projects out of the pipeline in the radial direction and is arranged coaxially at a distance from the inner pipe (14), is connected to a retaining ring (18) which rests tightly on the outer pipe (16) and expands on both sides in the axial direction. The mounting disc (10) is supported at the sides by two elastic pressure rings (28) which are resistant to a temperature of at least 200 DEG C and are thermally and electrically insulating. For their part, these pressures rings (28) are held by two opposing discs (32) which are welded to the inner pipe (14) and close off the annular cavity between the pipes. IMAGE
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