API Spec 6A
Specification for Wellhead and Christmas Tree Equipment, Fourteenth Edition
standard by American Petroleum Institute, 01/01/1983
Specification for Wellhead and Christmas Tree Equipment, Fourteenth Edition
standard by American Petroleum Institute, 01/01/1983
Specification of Nickel Base Alloy 718 (UNS N07718) for Oil and Gas Drilling and Production Equipment
standard by American Petroleum Institute, 03/01/2004
Specification for Validation of Wellhead Surface Safety Valves and Underwater Safety Valves for Offshore Service, Third Edition
standard by American Petroleum Institute, 07/01/2018
Specification for Verification Test of Wellhead Surface Safety Valves and Underwater Safety Valves for Offshore Service(includes Errata dated December 1996)
standard by American Petroleum Institute, 02/01/1996
Specification for Pipelineand Piping Valves, Twenty-Fourth Edition, Includes Errata 1 (2014), Errata 2 (2014), Errata 3 (2015) and 4 (2015), and Addendum 1 (2015), Errata 5 (2015), Errata 6 (2015), Errata 7 (2016), Errata 8 (2016), Errata 9 (2017) and Addendum 2 (2016)
standard by American Petroleum Institute, 08/01/2014
Specification for Pipeline Valves
standard by American Petroleum Institute, 01/01/2002
Specification for Pipeline Valves, Twenty-third Edition (Identical to ISO 14313:2007), Includes Errata 1, 2, 3, 4, 5, and 6 (2011) and Addenda 1, 2 (2011), 3 (2012)
standard by American Petroleum Institute, 04/01/2008
Specification for Pipeline Valves (Gate, Plug, Ball and Check Valves)
standard by American Petroleum Institute, 03/31/1994
Specification for Subsea Pipeline Valves, Second Edition (ISO 14723:2009 Identical Adoption)
standard by American Petroleum Institute, 12/01/2009
Specification on Subsea Pipeline Valves, First Edition
standard by American Petroleum Institute, 06/01/2007