Half Price Standard Code

Specification for Line Pipe, Twenty-fourth Edition
standard by American Petroleum Institute, 04/01/1969

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

Specification for Line Pipe, Twenty-ninth Edition
standard by American Petroleum Institute, 03/01/1977

Inspection, Assessment, and Repair of Heavy Wall Reactor Vessels in High-temperature High-pressure Hydrogen Service, First Edition
standard by American Petroleum Institute, 05/01/2022

Errata 1 to Choke and Kill Equipment, Third Edition
Amendment by American Petroleum Institute, 07/01/2022

Sealless Centrifugal Pumps for Petroleum, Petrochemical, and Gas Industry Process Service, Third Edition
standard by American Petroleum Institute, 07/01/2022

Addendum to Technical Report on Materials Selection for Bolting, First Edition
Amendment by American Petroleum Institute, 05/01/2022

Centrifugal Pumps for General Refinery Service, Third Edition
standard by American Petroleum Institute, 01/01/1960

Specification for Wellhead and Christmas Tree Equipment, Nineteenth Edition, Includes Erratas 1-5 (2009), Addendums 1, 2, 3, and 4 (2008)
standard by American Petroleum Institute, 07/01/2004

Use of Duplex Stainless Steels in Hydroprocessing Reactor Effluent Air Coolers (REACs)
standard by American Petroleum Institute, 08/01/2022