Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries, Ninth Edition
standard by American Petroleum Institute, 01/01/2003

General-Purpose Steam Turbines for Petroleum, Chemical, and Gas Industry Services, Fifth Edition
standard by American Petroleum Institute, 03/01/2008

Petroleum, Petrochemical and Natural Gas Industries-Steam Turbines-Special-purpose Applications, Seventh Edition
standard by American Petroleum Institute, 08/01/2014

Petroleum, Petrochemical and Natural Gas Industries-Steam Turbines-Special-purpose Applications, Sixth Edition
standard by American Petroleum Institute, 11/01/2005

API Standard 613, Special Purpose Gear Units for Petroleum, Chemical and Gas Industry Services, Fifth Edition
standard by American Petroleum Institute, 02/01/2003

Lubrication Shaft-Sealing and Control-Oil Systems for Special-Purpose Applications
standard by American Petroleum Institute, 04/01/1999

Lubrication, Shaft-sealing and Oil-control Systems and Auxiliaries, Fifth Edition (ISO 10438:2008, Modified), Includes Errata (2008)
standard by American Petroleum Institute, 04/01/2008

Gas Turbines for the Petroleum, Chemical, and Gas Industry Services
standard by American Petroleum Institute, 08/01/1998

Gas Turbines for the Petroleum, Chemical, and Gas Industry Services, Fifth Edition
standard by American Petroleum Institute, 01/01/2011

Axial and Centrifugal Compressors and Expander-compressors, Eighth Edition, Includes Errata 1 (2016)
standard by American Petroleum Institute, 09/01/2014