Procedure for attachment of vertically oriented ribs on the outside of pipes
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United States of America Patent
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-
Mar 28, 1989
Issued Date -
N/A
app pub date -
Oct 26, 1987
filing date -
Oct 24, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process of attachment of at least one rib on a pipe with a thin wall which comprises cutting a hole in the rib that corresponds closely to the outer diameter of the pipe; locating the rib on the outer surface of the pipe; pressurizing the interior of the pipe with a pressure sufficient to force the outer surface of the pipe into close relationship with the inner contour of the rib during or shortly before reaching the soldering temperature; attaching the rib to the pipe by soldering; and selecting the materials for the rib and pipe so that the linear thermal expansion coefficients allow a smaller gap between the pipe and the rib during soldering than when the pipe and rib are at room temperature.
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