Method and installation for laying a pipe-line

摘要

The invention relates to a method for laying a pipe-line, wherein pipes are welded to each other along a ring weld and wherein the ring weld is covered with a mastic ring. In the known method of this type the mastic of asphalt bitumen is melted and cast into a mould arranged round the ring weld. Working with a hot substance (180 DEG C.) is dangerous. The vapours from melted asphalt bitumen create an unpleasant and unhealthy work climate. The quality of asphalt bitumen deteriorates the more melted it becomes. The invention has for its object to provide a method wherein the above stated and/or other drawbacks occur either at least to a lesser extent or not at all. To this end the method according to the invention has the feature that the mastic is arranged substantially in plastic condition around the ring weld.