API Spec 9A Errata 1 Errata for Specification for Wire Rope Amendment by American Petroleum Institute, 10/01/2012
API Spec 6D Addendum 3 Addenda 3 to Specification for Pipeline Valves, Twenty-third Edition (Identical to ISO 14313:2007) Amendment by American Petroleum Institute, 10/01/2012
API 11AX Addendum 2 Addendum to Specification for Subsurface Sucker Rod Pumps and Fittings, 12th Edition Amendment by American Petroleum Institute, 10/01/2012
API Std 526 Errata 2 Errata 2 to Flanged Steel Pressure Relief Valves, Fifth Edition, Includes Errata (May 2009), Errata 2 (Oct 2012) Amendment by American Petroleum Institute, 10/01/2012
API Spec 5CT Errata Errata for Specification for Casing and Tubing, Ninth Edition Amendment by American Petroleum Institute, 09/01/2012
API Spec 6A Addendum 2 Addendum 2 to Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition (ISO 10423:2009 Modification) Amendment by American Petroleum Institute, 11/01/2012
API RP 85 Addendum Addendum to Recommended Practice 85, Use of Subsea Wet-gas Flowmeters in Allocation Measurement Systems Amendment by American Petroleum Institute, 01/01/2013
API Spec 7F Errata Errata to Oil Field Chain and Sprockets, Eighth Edition Amendment by American Petroleum Institute, 05/01/2013
API Spec 2C Errata Errata for Offshore Pedestal-mounted Cranes Amendment by American Petroleum Institute, 03/01/2013
API Spec 6A Addendum 3 Addendum 3 to Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition (ISO 10423:2009 Modification) Amendment by American Petroleum Institute, 03/01/2013
API MPMS Chapter 20.1 Addendum Addendum to Allocation Measurement of Oil and Natural Gas: Allocation Measurement Amendment by American Petroleum Institute, 01/01/2013
API Spec 6A Errata 3 Errata 3 to Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition (ISO 10423:2009 Modification) standard by American Petroleum Institute, 06/01/2013