API Spec 6A PDF

Published Date: 10/31/2018

Specification for Wellhead and Tree Equipment, Twenty-First Edition, Includes Errata 1 (2019), Errata 2 (2020), Errata 3 (2020), Errata 4 (2021), Errata 5 (2024), Errata 6 (2024), Addendum 1 (2020), Addendum 2 (2021), Addendum 3 (2022), and Addendum 4 (2024)

Published Date: 10/01/2010

Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition (ISO 10423:2009 Modification), Includes Errata (through Errata 10, Aug 2016), Addenda 1(Nov 2011), 2 (Nov 2012), 3 (March 2013), and 4 (June 2016)

Published Date: 07/01/2004

Specification for Wellhead and Christmas Tree Equipment, Nineteenth Edition, Includes Erratas 1-5 (2009), Addendums 1, 2, 3, and 4 (2008)

Published Date: 05/01/2002

NOT AVAILABLE DUE TO SERIOUS TECHNICAL ERRORS IN DOCUMENT - Specification for Wellhead and Christmas Tree Equipment, 18th edition

Published Date: 11/01/1999

Specification for Wellhead and Christmas Tree Equipment, Seventeenth Edition

Published Date: 01/01/1986

Specification for Wellhead and Christmas Tree Equipment, 15th Edition

Published Date: 01/01/1983

Specification for Wellhead and Christmas Tree Equipment, Fourteenth Edition

Published Date: 01/01/1981

Specification for Wellhead and Christmas Tree Equipment, 13th Edition

Published Date: 01/01/1979

Specification for Wellhead and Christmas Tree Equipment, 12th Edition

Published Date: 10/01/1977

Specification for Wellhead and Christmas Tree Equipment, 11th Edition

Published Date: 09/01/2008

Technical Report on Capabilities of API Flanges Under Combinations of Load, Third Edition, Includes Errata (March 2017)

Published Date: 02/01/1992

Testing of Oilfield Elastomers (A Tutorial)

Published Date: 03/01/2023

Heat Treatment and Testing of Carbon, Micro-alloyed, and Low-alloy Steel Wrought and Cast Components, Third Edition

Published Date: 02/08/1996

Published Date: 02/09/1995

Published Date: 04/13/1995

Published Date: 04/10/1997

Published Date: 06/12/1997