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API Spec 20B

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API Spec 20B Open Die Shaped Forgings for Use in the Petroleum and Natural Gas Industry, First Edition, Includes Errata (2013)

standard by American Petroleum Institute, 04/01/2013

Full Description

Please note that the API Monogram Program effective date for the this document's next edition is May 31, 2021. Until then, this edition will still be considered active and not historical.

This API standard specifies requirements for the qualification and production of open die shaped forgings for use in API service components in the petroleum and natural gas industries when referenced by an applicable equipment standard or otherwise specified as a requirement for compliance.

This API standard is applicable to equipment used in the oil and natural gas industries where service conditions warrant the use of individually shaped open die forgings, including rolled rings. Examples include pressure containing or load bearing components. Forged bar, rolled bar, and forgings from which multiple parts are removed are beyond the scope of this specification.

This API standard establishes requirements for four forging specification levels (FSL). These four FSL designations define different levels of forged product technical, quality and qualification requirements.

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Spec 20B e1 pages.fm


Open Die Shaped Forgings for Use in the Petroleum and Natural Gas Industry


API SPECIFICATION 20B FIRST EDITION, APRIL 2013


ERRATA: DECEMBER 2013




Special Notes


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Copyright © 2013 American Petroleum Institute


Foreword


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Should: As used in a standard, “should” denotes a recommendation or that which is advised but not required in order to conform to the specification.


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Suggested revisions are invited and should be submitted to the Standards Department, API, 1220 L Street, NW, Washington, DC 20005, standards@api.org.


Contents


Page

  1. Scope 1

    1. Purpose 1

    2. Applicability 1

    3. Forging Specification Levels (FSL) 1

  2. Normative References 1

  3. Terms and Definitions 2

    1. Terms and Definitions 2

    2. Acronyms and Abbreviations 4

  4. Qualification 4

    1. General 4

    2. Qualification Forging 5

    3. Qualification Forging Evaluation 5

    4. Limits of Forging Qualifications 9

    5. Records of Qualification 10

  5. Production Forgings 11

    1. Qualification of Procurement Sources for Starting Material 11

    2. Material Specifications 12

    3. Manufacturing Procedure Specification (MPS) 12

    4. Process Control Variables 12

    5. Forging Production 13

    6. Inspection, Quality Control, Marking, and Documentation 13

    7. Repair Welding 14

    8. Traceability 14

    9. Record Retention 14

    10. Marking 15

    11. Handling, Storage, and Shipping 15

Annex A (informative) API Monogram Program 16

Bibliography 20

Tables

  1. As-forged Weight Range Classes 5

  2. Material Groups 6

  3. ASTM E45 Method A Inclusion Rating Limits 8

  4. Variables of Forging Qualification 9

Open Die Shaped Forgings for Use in the Petroleum and Natural Gas Industry


  1. Scope

    1. Purpose


      This API standard specifies requirements for the qualification and production of open die shaped forgings for use in API service components in the petroleum and natural gas industries when referenced by an applicable equipment standard or otherwise specified as a requirement for compliance.


    2. Applicability


      This API standard is applicable to equipment used in the oil and natural gas industries where service conditions warrant the use of individually shaped open die forgings, including rolled rings. Examples include pressure containing or load bearing components. Forged bar, rolled bar, and forgings from which multiple parts are removed are beyond the scope of this specification.


    3. Forging Specification Levels (FSL)


      This API standard establishes requirements for four forging specification levels (FSL). These four FSL designations define different levels of forged product technical, quality and qualification requirements.


  2. Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.


API Specification 6A, Twentieth Edition, Specification for Wellhead and Christmas Tree Equipment ASTM A370 1, Standard Test Methods and Definitions for Mechanical Testing of Steel Products ASTM A388/A388M, Standard Practice for Ultrasonic Examination of Steel Forgings

ASTM A604, Standard Practice for Macroetch Testing of Consumable Electrode Remelted Steel Bars and Billets


ASTM E10, Standard Test Method for Brinell Hardness Test of Metallic Materials ASTM E18, Standard Test Method for Rockwell Hardness Test of Metallic Materials ASTM E45, Standard Test Method for Determining the Inclusion Content of Steel

ASTM E110, Standard Test Method for Indentation Hardness of Metallic Materials by Portable Hardness Testers


ASTM E112, Standard Test Method for Determining Average Grain Size


ASTM E165, Standard Practice for Liquid Penetrant Examination for General Industry


ASTM E381, Standard Method of Macroetch Testing Steel Bars, Billets, Blooms and Forgings


1 ASTM International, 100 Barr Harbor Drive, West Conshohocken, Pennsylvania 19428, www.astm.org.


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