Method for applying corrosion-protective coating to joint between corrosion-protectively coated steel pipes
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United States of America Patent
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Jul 27, 1999
Grant Date -
N/A
app pub date -
Oct 11, 1996
filing date -
Oct 12, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a joint between welded end portions of corrosion-protectively coated steel pipes, a heat-shrinkable tube is positioned so as to cover the outer circumference of a welded portion and the outer circumferences of its adjacent portions, and the heat-shrinkable tube is thermally shrunk in a state in which a gap between the heat-shrinkable tube and the aforementioned portions is kept in a vacuum so that the aforementioned portions are corrosion-protectively coated with the heat-shrinkable outer layer of the heat-shrinkable tube thus thermally shrunk.
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