Specification for Wellhead and Christmas Tree Equipment, 13th Edition
standard by American Petroleum Institute, 01/01/1981

Natural Gas Processing Plant Practices For Protecting the Environment
standard by American Petroleum Institute, 12/01/1995

Human Neurobehavorial Study Methods: Effects of Subject Variables on Research Results
standard by American Petroleum Institute, 12/01/1996

Spiral Plate Heat Exchangers, First Edition, Includes Errata (2021)
standard by American Petroleum Institute, 03/01/2014

Specification for Subsurface Sucker Rod Pumps and Fittings, Twelfth Edition, Includes Addendum (2011), Addendum 2 (2012)
standard by American Petroleum Institute, 05/01/2006

Specification for Drill Pipe
standard by American Petroleum Institute, 10/01/2001

Plate Heat Exchangers for General Refinery Services – Part 1 – Plate-and-Frame Heat Exchangers, First Edition – ISO Adoption from ISO 15547-1:2005
standard by American Petroleum Institute, 02/01/2006

CRA Clad or Lined Steel Pipe, Fourth Edition, Includes Errata 1(2017)
standard by American Petroleum Institute, 03/01/2015

Positive Displacement Pumps-Rotary, Third Edition
standard by American Petroleum Institute, 11/01/2009

Testing of Heavy Brines, Fourth Edition
standard by American Petroleum Institute, 05/01/2006