The 16th is 1998
API RP 7G 16th Ed. Aug. 1998 - Recommended Practice for Drill Stem Design and Operating Limits.pdf

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But I have a draft of 7G-2
API RP 7G-2 1st Ed. Apr. 2009 - Recommended Practice for Inspection and Classification of Used Drill Stem Elements - ISO 10407-2;2008 - Draft.pdf

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