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API Spec 7 Addendum 2

M00022728

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API Spec 7 Addendum 2 Specification for Rotary Drill Stem Elements, Fortieth Edition, March 2006 Addendum

Amendment by American Petroleum Institute, 03/01/2006

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This is the March 2006 Addendum to API Spec 7.

Effective Date: September 2006