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About This Item
Full Description
This document specifies requirements for the performance, dimensional and functional interchangeability, design, materials, testing, inspection, welding, marking, handling, storing, shipment, purchasing, repair, and remanufacture of wellhead and tree equipment for use in the petroleum and natural gas industries. This document does not apply to field use, field testing, or field repair of wellhead and Christmas tree equipment.
This document is applicable to the following specific equipment: wellhead equipment (integral, blind, and test flanges; ring gaskets; threaded connectors; tees and crosses; bullplugs; valve-removal plugs; standard and nonstandard top connectors; crossover connectors; other end connectors; adapter spools and spacer spools; gate, plug, and ball valves; actuated valves [manual and remote]; check valves [swing- and lift-type]; back-pressure valves; slip-type and mandrel-type casing and tubing hangers, casing and tubing heads [housings and adapters]; chokes [fixed, manually actuated, remotely actuated]; actuators [for valves and chokes]; surface safety valve (SSV) assemblies, valves prepared for actuators, and actuators; underwater safety valve [USV] assemblies, valves prepared for actuators, and actuators; boarding shutdown valve [BSDV] assemblies, valves prepared for actuators, and actuators; and tree assemblies).
This document defines service conditions in terms of pressure, temperature, and material class for the well-bore constituents, and operating conditions. This international standard establishes requirements for four product specification levels (PSL). These four PSL designations define different levels of technical quality requirements.
For more information, visit: https://www.api.org/products-and-services/standards/important-standards-announcements/spec-6a.
Document History
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API Spec 6A
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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)- Most Recent
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API Spec 6A
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)- Historical Version
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API Spec 6A
Specification for Wellhead and Christmas Tree Equipment, Nineteenth Edition, Includes Erratas 1-5 (2009), Addendums 1, 2, 3, and 4 (2008)- Historical Version
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API Spec 6A
NOT AVAILABLE DUE TO SERIOUS TECHNICAL ERRORS IN DOCUMENT - Specification for Wellhead and Christmas Tree Equipment, 18th edition- Historical Version
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API Spec 6A
Specification for Wellhead and Christmas Tree Equipment, Seventeenth Edition- Historical Version
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API Spec 6A
Specification for Wellhead and Christmas Tree Equipment, 15th Edition- Historical Version
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API Spec 6A
Specification for Wellhead and Christmas Tree Equipment, Fourteenth Edition- Historical Version
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API Spec 6A
Specification for Wellhead and Christmas Tree Equipment, 13th Edition- Historical Version
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API Spec 6A
Specification for Wellhead and Christmas Tree Equipment, 12th Edition- Historical Version
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API Spec 6A
Specification for Wellhead and Christmas Tree Equipment, 11th Edition- Historical Version
Amendments, rulings, supplements, and errata
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API Spec 6A Addendum 3
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Addendum 3 to Specification for Wellhead and Tree Equipment, Twenty-First Edition -
API Spec 6A Errata 4
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Errata 4 to Specification for Wellhead and Tree Equipment -
API Spec 6A Addendum 2
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Addendum to Specification for Wellhead and Tree Equipment, Twenty-First Edition -
API Spec 6A Errata 3
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Errata to Specification for Wellhead and Tree Equipment, Twenty-First Edition -
API Spec 6A Addendum 1
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Addendum to Specification for Wellhead and Tree Equipment -
API Spec 6A Errata 2
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Errata to Specification for Wellhead and Tree Equipment, Twenty-First Edition -
API Spec 6A Errata 1
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Errata to Specification for Wellhead and Tree Equipment, Twenty-First Edition