Pipe stalk and method of assembling a pipeline therefrom
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United States of America Patent
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Nov 19, 2013
Grant Date -
May 5, 2011
app pub date -
Nov 19, 2008
filing date -
Dec 1, 2007
priority date (Note) -
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Abstract
A pipe stalk for a pipe-in-pipe pipeline, the pipe stalk including an outer pipe and at least one inner pipe located within the outer pipe, and having a retaining assembly moveable between a first configuration for preventing axial movement of the inner pipe with respect to the outer pipe in a downwards direction and a second configuration for allowing axial movement of the outer pipe with respect to the inner pipe, whereby axial movement of the inner pipe with respect to the outer pipe can be prevented when the outer pipe is held during welding to an adjacent pipe stalk.
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