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

Age-hardened Nickel-based Alloys for Oil and Gas Drilling and Production Equipment, First Edition, Includes Addendum 1 (2017), Addendum 2 (2018), Addendum 3

Specification for Line Pipestandard by American Petroleum Institute, 01/01/2000

Fired Heaters for General Refinery Service, Fifth Editionstandard by American Petroleum Institute, 02/01/2016

Closed Die Forgings for Use in the Petroleum and Natural Gas Industry, First Edition, Includes Addendum 1 (2014)standard by American Petroleum Institute,

Technical Report on Temperature Derating of API Flanges Under Combination of Loadingstandard by American Petroleum Institute, 11/01/1998

Specification for Wellhead and Christmas Tree Equipment, Fourteenth Editionstandard by American Petroleum Institute, 01/01/1983

Addendum to Design and Construction of Large, Welded, Low-Pressure Storage Tanks, Eleventh EditionAmendment by American Petroleum Institute, 03/01/2009

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

Sealless Centrifugal Pumps for Petroleum, Petrochemical, and Gas Industry Process Service, Second Editionstandard by American Petroleum Institute, 02/01/2011

Heat Treatment Services - Batch Type for Equipment Used in the Petroleum and Natural Gas Industry, First Editionstandard by American Petroleum Institute,