Addendum to Calculation of Heater-tube Thickness in Petroleum Refineries, Seventh EditionAmendment by American Petroleum Institute, 07/01/2019

Addendum 1 to Technical Report 939-D - Stress Corrosion Cracking of Carbon Steel in Fuel Grade Ethanol: Review and Survey, Second EditionAmendment

Datasheets for API Std 671Data Sheet by American Petroleum Institute,

Addendum 1 to Specification for Quality Management System Requirements for Manufacturing Organizations for the Petroleum and Natural Gas Industry, Ninth EditionAmendment by

Errata to Specification for Subsea Production Control Systems, Fourth EditionAmendment by American Petroleum Institute, 07/01/2018

Errata to Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition (ISO 10423:2009 Modification)standard by American Petroleum Institute, 01/01/2011

Offshore Cargo Carrying Units, First Editionstandard by American Petroleum Institute, 08/01/2017

Errata 1 to Standard for Repair and Remanufacture of Drill-through Equipment, First EditionAmendment by American Petroleum Institute, 08/01/2017

Addendum 2 to Welded Steel Tanks for Oil Storage, 11th EditionAmendment by American Petroleum Institute, 11/01/2009

Check Valves: Flanged, Lug, Wafer and Butt-welding, 6th Editionstandard by American Petroleum Institute, 09/01/2004

API Technical Report 17TR7 Verification and Validation of Subsea Connectors, First Editionstandard by American Petroleum Institute, 04/01/2017

Addendum 1 to Welded Steel Tanks for Oil Storage, 11th EditionAmendment by American Petroleum Institute, 11/01/2008