API Spec 5L Addendum 1 Addendum for Specification for Line Pipe, Forty-fourth Edition (2009) Amendment by American Petroleum Institute, 02/01/2009
API Spec 11E Errata 1 Errata for Specifications for Pumping Units, Eighteenth Edition Amendment by American Petroleum Institute, 03/01/2009
API Std 530 Errata 1 Errata for Calculation of Heater-tube Thickness in Petroleum Refineries, Sixth Edition (ISO 13704:2007, Identical) Amendment by American Petroleum Institute, 01/01/2009
API Spec 5L Errata 1 Errata for Specification for Line Pipe, Forty-fourth Edition Amendment by American Petroleum Institute, 01/01/2009
API 6FB Errata 2 Errata for Fire Test for End Connections Amendment by American Petroleum Institute, 12/01/2008
API 6FA Errata 2 Errata for Specification for Fire Test for Valves Amendment by American Petroleum Institute, 12/01/2008
API Spec 6H Errata 1 Errata 1 for Specification for End Closures, Connectors, and Swivels Amendment by American Petroleum Institute, 12/01/2008
API RP 7G Addendum 2 Addendum 2 to Recommended Practice for Drill Stem Design and Operation Limits Amendment by American Petroleum Institute, 09/01/2009
API RP 1117 Errata 2 Errata 2 for Recommended Practice for Movement in In-service Pipelines, Third Edition Amendment by American Petroleum Institute, 08/01/2009
API Std 1104 Errata 2 Errata 2 for Welding of Pipelines and Related Facilities - 20th Edition Amendment by American Petroleum Institute, 12/01/2008
API Spec 6FC Errata 1 Errata 1 for Fire Test for Valve with Automatic Backseats Amendment by American Petroleum Institute, 12/01/2008
API RP 7G-2 Errata Errata for Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition (Identical Adoption of ISO 10407-2:2008) Amendment by American Petroleum Institute, 10/01/2009