Specification for Vertical and Horizontal Emulsion Treaters, Fifth Edition
standard by American Petroleum Institute, 10/01/2008

Specification for Vertical and Horizontal Emulsion Treaters
standard by American Petroleum Institute, 11/01/1994

Specification for Fiberglass Reinforced Plastic Tanks, Third Edition
standard by American Petroleum Institute, 10/01/2008

Specification for Fiberglass Reinforced Plastic Tanks, Fourth Edition
standard by American Petroleum Institute, 02/01/2016

Specification for Fiberglass Reinforced Plastic Tanks
standard by American Petroleum Institute, 01/01/1995

Specification for Drilling-Fluid Materials, Seventeenth Edition, Includes Errata (2008)
standard by American Petroleum Institute, 11/01/2006

Specification for Drilling Fluid Materials, Eighteenth Edition, Includes Errata 1, 2, 3, & 4
standard by American Petroleum Institute, 02/01/2010

Specification for Subsurface Safety Valve Equipment, Twelfth Edition, Includes Errata (July, 2015)
standard by American Petroleum Institute, 01/01/2015

Subsurface Safety Valve Equipment
standard by American Petroleum Institute, 05/15/2000

Specification for Subsurface Safety Valve Equipment, 11th Edition
standard by American Petroleum Institute, 10/01/2005