Method and installation for laying a pipe-line
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United States of America Patent
Stats
-
Dec 31, 1996
Grant Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jun 8, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.degree. 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.
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Family
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Cited Art Landscape
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