Definition(s)
Linear Imperfection
Imperfection including, but not limited to, seams, laps, cracks, plug scores, cuts and gouges.
Source: API SPEC 5CRA, Specification for Corrosion Resistant Alloy Seamless Tubes for Use as Casing, Tubing and Coupling Stock, Upstream Segment, First Edition, February 2010 (Errata August 2011). Global Standards
Linear Imperfection
Imperfection which includes, but is not limited to, seams, laps, cracks, plug scores, cuts and gouges. NOTE See API Std 5T1.
Source: API SPEC 5CT, Specification for Casing and Tubing, Upstream Segment, Ninth Edition, July 2011 (Errata September 2012). Global Standards
Linear Imperfection
Imperfection that includes, but is not limited to, seams, laps, cracks, plug scores, cuts, gouges and elephant hide. NOTE See API 5T1. [ISO 11960:2004, definition 4.1.25].
Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards