API Specification Q1, Specification for Quality Programs for the Petroleum, Petrochemical and Natural Gas Industry, Seventh Edition
standard by American Petroleum Institute, 06/15/2003

Specification for Quality Programs for the Petroleum and Natural Gas Industry, Eighth Edition, Includes Addendum 1 (2010)
standard by American Petroleum Institute, 12/01/2007

Specification for Quality Management System Requirements for Manufacturing Organizations for the Petroleum and Natural Gas Industry, Ninth Edition, Includes Errata (February 2014), Errata 2 (March 2014), Addendum 1 (June 2016) and 2 (June 2018) (Addendums Available in English Only)
standard by American Petroleum Institute, 06/01/2013

API Spec Q1, Ninth Edition (Includes Errata (February 2014), Errata 2 (March 2014), Addendum 1 (June 2016) and 2 (June 2018)) and Spec Q2, First Edition (Includes Addendum 1 (June 2016)) Set
standard by American Petroleum Institute, 06/01/2013

Welding Pipe Lines and Related Facilities, 13th Edition
standard by American Petroleum Institute, 07/01/1973

Welding Pipe Lines and Related Facilities, 14th Edition
standard by American Petroleum Institute, 01/01/1977

Welding Pipe Lines and Related Facilities, with Supplement 1, 15th Edition
standard by American Petroleum Institute, 06/01/1982

Welding of Pipelines and Related Facilities, 21st Edition, Includes Errata 1 (2013), Errata 2 (2014), Errata 3 (2014), Errata 4 (2015), Errata 5 (2018) and Addendum 1 (2014), Addendum 2 (2016)
standard by American Petroleum Institute, 09/01/2013

Welding of Pipelines and Related Facilities – 20th Edition, Includes Errata 1 (2007) and 2 (2008)
standard by American Petroleum Institute, 11/07/2005

Managing System Integrity for Hazardous Liquid Pipelines
standard by American Petroleum Institute, 11/01/2001