Coiled tube with varying mechanical properties for superior performance and methods to produce the same by a continuous heat treatment
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United States of America Patent
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Oct 20, 2015
Grant Date -
Jul 26, 2012
app pub date -
Sep 9, 2011
filing date -
Jan 25, 2011
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Abstract
Described herein are coiled tubes with improved and varying properties along the length that are produced by using a continuous and dynamic heat treatment process (CDHT). Coiled tubes can be uncoiled from a spool, subjected to a CDHT process, and coiled onto a spool. A CDHT process can produce a “composite” tube such that properties of the tube along the length of the tube are selectively varied. For example, the properties of the tube can be selectively tailored along the length of the tube for particular application for which the tube will be used.
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