Steels for Hydrogen Service at Elevated Temperatures and Pressures in Petroleum Refineries and Petrochemical Plants, Eighth Edition, Includes Errata 1 (2016) and

Heat Recovery Steam Generators, Second Editionstandard by American Petroleum Institute, 02/01/2007

Calculating Performance Properties of Pipe Used as Casing or Tubing, Seventh Edition, Includes Addendum 1standard by American Petroleum Institute, 06/01/2018

API Recommended Practice 9B, Application, Care, and Use of Wire Rope for Oilfield Service, Eleventh Editionstandard by American Petroleum Institute, 09/01/2002

Contractor Safety Management for Oil and Gas Drilling and Production Operations, Second Editionstandard by American Petroleum Institute, 11/01/2007

Errata for Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries, Eleventh Edition (ISO 13709:2009 Identical Adoption)Amendment by American Petroleum Institute, 07/01/2011

Addendum 2 to Welded Tanks for Oil Storage, Twelfth EditionAmendment by American Petroleum Institute, 01/01/2016

Sizing, Selection, and Installation of Pressure-Relieving Devices in Refineries: Part I - Sizing and Selectionstandard by American Petroleum Institute, 01/01/2000

Measurement and Calibration of Tank Carsstandard by American Petroleum Institute, 10/01/1966

Centrifugal Fans for Petroleum, Chemical and Gas Industry Services, Second Editionstandard by American Petroleum Institute, 10/01/2002

Recommended Practice Welding Guidelines for the Chemical, Oil, and Gas Industries, Third Editionstandard by American Petroleum Institute, 05/01/2016

Risk-based Machinery Management, First Editionstandard by American Petroleum Institute, 06/01/2017