API Spec 7-1 (R2015)
API Spec 7-1 (R2015) Specification for Rotary Drill Stem Elements, First Edition -- Identical to ISO 10424-1:2004, Includes Addendum 1 (2007), Addendum 2 (2009), Addendum 3 (2011), and Addendum 4 (2019)
standard by American Petroleum Institute, 02/01/2006







![AS/NZS 8980.1:2019 [ Current ]](/en-default-medium/AS-NZS-8980-1-2019.jpg)