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API 6A - 21st EditionSpecification for Wellhead andTree EquipmentPublication Date: November 2018Effective Date: November 2019For Reference Only1

API 6A - 21st EditionSpecification for Wellhead andChristmas Tree EquipmentPublication Date: November 2018Effective Date: November 20192

Committee Member Reaction3

History of 21st Edition of 6ABallotsBallot 3064 – Comment Ballot Closed – 7/30/2015 – Comment only 894 Comments addressedBallot 4084 – Technical Ballot Closed – 4/6/2017 - Passed 1198 Comments addressedBallot 4291 – Technical Ballot Closed – 11/22/2017 - Passed 527 Comments addressedBallot 4464 – Final Ballot (Reorganized Specification) Closed – 6/11/2018 – Passed 1023 Comments received – 26 Technical, 116 General, 907 editorial4

API 6A 21st Edition TimelineFirst TG Meeting7/31/2013Released11/20185 ballots (includingrecirculation ballot),review ofinterpretations, manymeetings and lots ofgood debate &discussion5

First Meeting6

A sample of things that didn’t change butwere discussed Definition of a manufacturer – onsite, offsite, outsourceFull trim designation marking / Elimination of Class ZZElimination of PSL 1Increasing impact property requirementsReference “X” dimension for hub of 6B flangesMaking Annex F normativeComplete removal of Segmented flangesRemoval of Weld-Neck flangesRemoval of “pressure-containing” / “pressurecontrolling” languageRequiring higher 20E BSL’s as normative base levelPR3 AnnexFully Developed HPHT Philosophy/Document for 6AEquipment7

Document Suite Changes for 6A - 21stEdition6AV13rd Ed6A21st Ed.6AR2nd Ed6X2nd Ed8

Document Suite Changes for 6A - 21stEdition6AV13rd Ed6AR2nd Ed6A21st Ed.6X2nd EdTR6RTTools9

Document Suite Changes for 6A - 21stEdition6AV13rd Ed20A,E,F6AR2nd Ed6A21st Ed.6X2nd EdTR6RTTools10

Document Suite Changes for 6A - 21stEdition6AV13rd Ed20B,C,D,H6X2nd Ed6A21st Ed.20A,E,FTR6RTTools6AR2nd Ed11

Document Suite Changes for 6A - 21stEdition6AV13rd EdISO156141,7ISO1560920B,C,D,H6X2nd Ed6A21st Ed.20A,E,FTR6RTTools6AR2nd Ed12

Document Suite Changes for 6A - 21stEdition6AV13rd Ed6X2nd Ed6ACRAISO156141,7ISO156096A21st Ed.20B,C,D,HTR6RTTools6AR2nd Ed20A,E,F13

Document Suite Changes for 6A - 21stEdition6AV13rd Ed6X2nd Ed17TR86ACRA6A21st Ed.ISO156141,7ISO15609TR6RTTools6AR2nd Ed20B,C,D,H20A,E,F14

Format Changes – Overall ReorganizationDiscussion Main Goal was to Improve Document Readabilityand Usability Section re-organization Annex Changes Deleted (not critical, out-of-scope, info moved toanother document, info moved into main body) Modified (position change, info moved to other Annex) New Created home for products which could beconsidered for removal in later editions Created depository for SI tables in Annex to matchUSC Annex modified from 20th Edition Grouping by Activity versus PSLUniformity of layout in product specification sectionis content level two15

Format Changes – Overall ReorganizationDiscussion Main Goal was to Improve Document Readabilityand Usability Section re-organization Annex Changes Deleted (not critical, out-of-scope, info moved toanother document, info moved into main body) Modified (position change, info moved to other Annex) New Created home for products which could beconsidered for removal in later editions Created depository for SI tables in Annex to matchUSC Annex modified from 20th Edition Grouping by Activity versus PSLUniformity of layout in product specificationsectionlevel two16

Overview of New Format - 21st Edition of 6ASections: Better organized to more closely reflect specific activity General re-arrangement, 6A-20th – 11 sections to 6A-21st – 15 sections Added: Section 5 – Design (Formerly part of Section 4) Section 8 - Bolting (Formerly part of Section 10) Section 9 – Pressure Boundary Penetrations (Formerly Part of Section 10) Section 11 – FAT (Formerly Part of Section 7) Section 15 – Records (Formally Part of Section 7) Deleted Repair and Remanufacture Section (20th Edition Section 11) – No longer inscope of 6A. To be addressed in 6AR.17

Sections – Main Body (New Sections in Red)6A – 20th Edition6A – 21st Edition1. Scope1. Scope2. Normative References2. Normative References3. Terms, definitions and abbreviatedterms3. Terms, Definitions, Abbreviated Terms,and Symbols4. Design & Performance4. Application and Performance5. Materials5. Design6. Welding6. Materials7. Quality control7. Welding8. Equipment marking8. Bolting9. Storing and Shipping10. Equipment-specific requirements9. Packing Mechanisms, Fittings, BoundaryPenetrations, and Ports11. Repair & remanufacture10. Quality Control11. Factory Acceptance Testing12. Equipment Marking13. Storing and Shipping14. Equipment-specific Requirements15. Records18

Format Changes – Overall ReorganizationDiscussion Main Goal was to Improve Document Readabilityand Usability Section re-organization Annex Changes Deleted (not critical, out-of-scope, info moved toanother document, info moved into main body) Modified (position change, info moved to other Annex) New Created home for products which could beconsidered for removal in later editions Created depository for SI tables in Annex to matchUSC Annex modified from 20th Edition Grouping by Activity versus PSLUniformity of layout in product specification sectionis content level two19

Annex Changes – 20th Edition A (informative) Purchasing guidelines B (informative) USC unit tables and data for this International Standard C (informative) Method of calculating stud bolt lengths for type 6B and 6BXflanges D (informative) Recommended flange bolt torque E (informative) Recommended weld preparation design dimensions F (informative) Design validation procedures G (informative) Design and rating of equipment for use at elevated temperatures H (normative) Design and manufacture of surface wellhead running, retrieving andtesting tools, clean-out tools and wear bushings I (normative) Design validation procedures for SSV’s and USV’s J (normative) Repair and remanufacture requirements K (informative) Recommended specifications for top connectors for Christmastrees L (normative) Specifications for VR preps, VR plugs and handling tools M (informative) Qualification of heat-treating equipment N (informative) List of tables and list of figures O (normative) API Regional Annex P (informative) Use of the API Monogram by Licensees and Test Agency Licensing20

Annex Changes – 20th Ed. - Deletions A (informative) Purchasing guidelines B (informative) USC unit tables and data for this International Standard C (informative) Method of calculating stud bolt lengths for type 6B and 6BXflanges D (informative) Recommended flange bolt torque E (informative) Recommended weld preparation design dimensions F (informative) Design validation procedures G (informative) Design and rating of equipment for use at elevated temperatures H (normative) Design and manufacture of surface wellhead running, retrieving andtesting tools, clean-out tools and wear bushings I (normative) Design validation procedures for SSV’s and USV’s J (normative) Repair and remanufacture requirements K (informative) Recommended specifications for top connectors for Christmastrees L (normative) Specifications for VR preps, VR plugs and handling tools M (informative) Qualification of heat-treating equipment N (informative) List of tables and list of figures O (normative) API Regional Annex P (informative) Use of the API Monogram by Licensees and Test Agency Licensing21

Annex Changes – 20th Ed. Modified A (informative) Purchasing guidelines B (informative) USC unit tables and data for this International Standard C (informative) Method of calculating stud bolt lengths for type 6B and 6BXflanges D (informative) Recommended flange bolt torque E (informative) Recommended weld preparation design dimensions F (informative) Design validation procedures G (informative) Design and rating of equipment for use at elevated temperatures H (normative) Design and manufacture of surface wellhead running, retrieving andtesting tools, clean-out tools and wear bushings I (normative) Design validation procedures for SSV’s and USV’s J (normative) Repair and remanufacture requirements K (informative) Recommended specifications for top connectors for Christmastrees L (normative) Specifications for VR preps, VR plugs and handling tools M (informative) Qualification of heat-treating equipment N (informative) List of tables and list of figures O (normative) API Regional Annex P (informative) Use of the API Monogram by Licensees and Test Agency Licensing22

Annex Changes – 20th Ed. Unchanged(?) A (informative) Purchasing guidelines B (informative) USC unit tables and data for this International Standard C (informative) Method of calculating stud bolt lengths for type 6B and 6BXflanges D (informative) Recommended flange bolt torque E (informative) Recommended weld preparation design dimensions F (informative) Design validation procedures G (informative) Design and rating of equipment for use at elevated temperatures H (normative) Design and manufacture of surface wellhead running, retrieving andtesting tools, clean-out tools and wear bushings I (normative) Design validation procedures for SSV’s and USV’s J (normative) Repair and remanufacture requirements K (informative) Recommended specifications for top connectors for Christmastrees L (normative) Specifications for VR preps, VR plugs and handling tools M (informative) Qualification of heat-treating equipment N (informative) List of tables and list of figures O (normative) API Regional Annex P (informative) Use of the API Monogram by Licensees and Test Agency Licensing23

Sections – Annexes6A – 21st Edition Annex A (informative) API Monogram Program Use of the API Monogram byLicensees Annex B (informative) Purchasing Guidelines Annex C (informative) Conversion Procedures—Units of Measure Annex D (normative) Dimensional Tables—SI Units Annex E (normative) Dimensional Tables—USC Units Annex F (informative) Design Validation Procedures for PR2 (PR2F Level) Annex G (informative) Design and Rating of Equipment for Use at ElevatedTemperatures Annex H (informative) Recommended Assembly of Closure Bolting Annex I (informative) Recommended Bolt Lengths Annex J (normative) Weld-neck Flanges Annex K (informative) Top Connectors Annex L (informative) Segmented Flanges Annex M (normative) Heat-treat Equipment Survey24

Sections – Annexes - New6A – 21st Edition Annex A (informative) API Monogram Program Use of the API Monogram byLicensees Annex B (informative) Purchasing Guidelines Annex C (informative) Conversion Procedures—Units of Measure Annex D (normative) Dimensional Tables—SI Units Annex E (normative) Dimensional Tables—USC Units Annex F (informative) Design Validation Procedures for PR2 (PR2F Level) Annex G (informative) Design and Rating of Equipment for Use at ElevatedTemperatures Annex H (informative) Recommended Assembly of Closure Bolting Annex I (informative) Recommended Bolt Lengths Annex J (normative) Weld-neck Flanges Annex K (informative) Top Connectors Annex L (informative) Segmented Flanges Annex M (normative) Heat-treat Equipment Survey25

Sections – Annexes - Renamed6A – 21st Edition Annex A (informative) API Monogram Program Use of the API Monogram byLicensees Annex B (informative) Purchasing Guidelines Annex C (informative) Conversion Procedures—Units of Measure Annex D (normative) Dimensional Tables—SI Units Annex E (normative) Dimensional Tables—USC Units Annex F (informative) Design Validation Procedures for PR2 (PR2F Level) Annex G (informative) Design and Rating of Equipment for Use at ElevatedTemperatures Annex H (informative) Recommended Assembly of Closure Bolting Annex I (informative) Recommended Bolt Lengths Annex J (normative) Weld-neck Flanges Annex K (informative) Top Connectors Annex L (informative) Segmented Flanges Annex M (normative) Heat-treat Equipment Survey26