Specification for Valves, Twenty-Fifth Edition, Includes Errata 1 (2021) and Errata 2 (2022)
standard by American Petroleum Institute, 11/01/2021

Specification for Line Pipe, Twenty-sixth Edition
standard by American Petroleum Institute, 04/01/1971

Preparing Tank Bottoms for Hot Work, Eighth Edition
standard by American Petroleum Institute, 04/01/2022

Thermal Reactors for Sulfur Recovery Units in General Refinery Services
standard by American Petroleum Institute, 06/01/2022

Specification for Line Pipe, Nineteenth Edition
standard by American Petroleum Institute, 03/01/1962

Specification for Line Pipe, Twenty-eighth Edition
standard by American Petroleum Institute, 03/01/1975

Specification for Line Pipe, Twenty-fifth Edition Includes Errata
standard by American Petroleum Institute, 04/01/1970

Specification for Wellhead and Tree Equipment, Twenty-First Edition, Includes Errata 1 (2019), Errata 2 (2020), Errata 3 (2020), Errata 4 (2021), Addendum 1 (2020), Addendum 2 (2021), and Addendum 3 (2022)
standard by American Petroleum Institute, 10/31/2018

standard by American Petroleum Institute, 12/01/1980

Specification for Line Pipe, Twentieth Edition Includes Errata
standard by American Petroleum Institute, 03/01/1963