Mass Measurement of Natural Gas Liquids, Third Edition
Handbook / Manual / Guide by American Petroleum Institute, 10/01/2009

Specification for Subsurface Sucker Rod Pumps and Fittings, Third Edition
standard by American Petroleum Institute, 03/01/1963

Refinery Stream Composition Data – Update to Speciation Data in API 4723
standard by American Petroleum Institute, 12/01/2018

Specification for Line Pipe, Thirty-first Edition
standard by American Petroleum Institute, 03/01/1980

Specification for Line Pipe, Fifth Edition
standard by American Petroleum Institute, 01/01/1934

General-Purpose Steam Turbines for Petroleum, Chemical and Gas Industry Services
standard by American Petroleum Institute, 06/01/1997

Reconciliation of Liquid Tank Car Quantities, First Edition
Handbook / Manual / Guide by American Petroleum Institute, 08/01/2020

Anecedotal Health-Related Complaint Data Pertaining to Possible Exposures to Methyl Tertiary Butyl Ether (MTBE): 1993 and 1994 Follow-Up Surveys (1984-1994)
standard by American Petroleum Institute, 08/01/1995

Evaporative Loss Measurement: Documentation File for API Manual of Petroleum Measurement Standards Chapter 19.2 – Evaporative Loss from Floating Roof Tanks
Handbook / Manual / Guide by American Petroleum Institute, 04/01/1997

Metal Plug Valves – Flanged, Threaded, and Welding Ends, Eighth Edition
standard by American Petroleum Institute, 03/01/2020