Addendum 1 for Tank Calibration: Calibration of Barge TanksAmendment by American Petroleum Institute, 09/01/2021

API Standard 613, Special Purpose Gear Units for Petroleum, Chemical and Gas Industry Services, Sixth Editionstandard by American Petroleum Institute, 07/01/2021

Calculation of Petroleum Quantities Using Dynamic Measurement Methods and Volumetric Correction Factors, Second EditionHandbook / Manual / Guide by American Petroleum Institute,

Installation and Handling of Spoolable Reinforced Line Pipe, First Editionstandard by American Petroleum Institute, 10/01/2021

Recommended Practice 90-1, Annular Casing Pressure Management for Offshore Wells, Second Editionstandard by American Petroleum Institute, 08/01/2021

Metering Assemblies - General Considerations, First EditionHandbook / Manual / Guide by American Petroleum Institute, 07/01/2021

Datasheets for API Std 612Data Sheet by American Petroleum Institute, 2020

Metering Assemblies - Pipeline and Marine Loading/Unloading Measurement Systems, First EditionHandbook / Manual / Guide by American Petroleum Institute, 07/01/2021

Butterfly Valves: Double-flanged, Lug- and Wafer-type, and Butt-welding Ends, Ninth Editionstandard by American Petroleum Institute, 04/01/2021

Errata 1 to Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries, Second EditionAmendment by American Petroleum

Recommended Practice for Measuring Conductivity of Proppantsstandard by American Petroleum Institute, 11/01/2021

Specification for Line Pipe, Twelfth Editionstandard by American Petroleum Institute, 03/01/1951