Flexible pipe body and method of providing same
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United States of America Patent
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Dec 5, 2017
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app pub date -
Jul 12, 2013
filing date -
Aug 7, 2012
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Abstract
A flexible pipe body and method of producing a flexible pipe body, the flexible pipe body including a collapse resistant layer comprising a radially inner surface and a radially outer surface, the radially inner surface comprising a plurality of substantially regular protrusions and/or depressions extending in a direction perpendicular to a tangent of the radially inner surface, for breaking up a boundary layer of fluid flowing along the flexible pipe body in use.
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