Specification for Threading, Gauging and Thread Inspection of Casing, Tubing, and Line Pipe Threads

API SPECIFICATION 5B FIFTEENTH EDITION, APRIL 2008

EFFECTIVE DATE: OCTOBER 1, 2008

Specification for Threading, Gauging and Thread Inspection of Casing, Tubing, and Line Pipe Threads

Upstream Segment

API SPECIFICATION 5B FIFTEENTH EDITION, APRIL 2008

EFFECTIVE DATE: OCTOBER 1, 2008

Special Notes

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Copyright © 2008 American Petroleum Institute

Foreword

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Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every five years. A one-time extension of up to two years may be added to this review cycle. Status of the publication can be ascertained from the API Standards Department, telephone (202) 682-8000. A catalog of API publications and materials is published annually and updated quarterly by API, 1220 L Street, N.W., Washington, D.C. 20005.

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

Standards referenced herein may be replace by other international or national standards that can be shown to meet or exceed the requirements of the referenced standard.

This fifteenth edition of API Spec 5B contains the following changes to the previous edition:

• Addendum 1, March 2004, and Errata, April 9, 1998, of the fourteenth edition are included in the text.

• Added SR22 in Appendix D.

• New metric tables added in Appendix E.

• New metric drawings added in Appendix F.

• Text formatted to a single column.

• Moved Extreme-Line Casing to Appendix G.

• Changed Pin Chamfer Angle from 65 to 60 (Agenda Item 3067).

• Additional editorial items.

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Contents

Page

1. Scope 1

   1. Coverage 1

   2. Inspection 1

   3. Other Requirements 1

2. References 1

   1. General 1

   2. Requirements 1

3. Definitions. 1

4. Thread Dimensions and Tolerances 2

   1. Line Pipe, Round Thread Casing and Tubing, and Buttress Thread Casing 2

5. Thread Inspection 22

   1. Line Pipe, Round Thread Casing and Tubing, and Buttress Thread Casing 22

6. Gauging Practice 36

   1. Line Pipe, Round Thread Casing and Tubing, and Buttress Thread Casing 36

7. Gauge Specification 39

   1. Line Pipe, Round Thread Casing and Tubing, and Buttress Thread Casing 39

8. API Gauge Certification 56

   1. Line Pipe, Round Thread Casing and Tubing, and Buttress Thread Casing 56

9. Thread Marking 57

Appendix A Instructions for Shipment of Master Gauges 59

Appendix B Marking Instructions for API Licensees 61

Appendix C API Gauge Certification Agency Requirements 63

Appendix D Supplementary Requirements (Normative) 65

Appendix E Tables in International Standard Units 69

Appendix F Figures in International Standard Units 91

Appendix G Extreme-Line Casing 97

Figures

1. Line Pipe Thread Form 5

2. Basic Dimensions of Line Pipe Thread Hand-Tight Make-Up 5

3. Basic Dimensions of Casing Round Threads Hand-Tight Make-Up 8

4. Casing Round Thread Form 8

5. Basic Dimensions of Buttress Casing Threads Hand-Tight Make-Up 12

6. Buttress Casing Thread Form and Dimensions—for Casing Sizes 41/2 through 133/8 13

7. Buttress Casing Thread Form and Dimensions—for Casing Sizes 16 and Larger 14

8. Basic Dimensions of Tubing Round Threads Hand-Tight Make-Up 17

9. Tubing Round Thread Form 17

   v

10. Typical External-Thread Taper Gauge 25

11. Typical Internal-Thread Taper Gauge for Threads in Sizes 41/2 and Larger 25

12. Typical Internal-Thread Taper Gauge for Threads in Sizes Smaller than 41/2 26

13. Typical Run-Out Gauge for Buttress Thread Casing 26

14. Typical Lead Gauges 28

15. Typical Thread Height Gauges 30

16. Typical Thread Height Gauge for Internal Threads in Nominal Sizes Smaller than 3 30

17. Typical Thread-Contour Microscope for Measuring Thread Angle and Checking Thread Form 31

18. Typical Single Dial Gauge for Buttress Threads 33

19. Typical Check Pieces for Setting Dial Gauges 33

20. Typical Machine for Checking Coupling-Thread Alignment 34

21. Typical Application of Coupling-Thread Alignment Gauge 35

22. Gauging Practice for Line Pipe Threads and Casing and Tubing Round Thread

    Hand-Tight Assembly 37

23. Gauging Practice for Buttress Casing Threads Hand-Tight Assembly 37

24. Comparison of Line Pipe Gauges Made Subsequent to 1940 and Gauges Made Prior to 1940 40

25. Thread Gauge for Line Pipe and Round Thread Casing and Tubing 44

26. Thread Gauge for Buttress Casing 44

27. Gauge Thread Form for Line Pipe and Round Thread Casing and Tubing. 45

28. Gauge Thread Form and Dimensions for Buttress Casing 45

29. Gauge Thread Form and Dimensions for Buttress Casing 46

30. Bolt Circles and Back-Up Plate Dimensions for Line Pipe, Buttress Casing and Short or

Long Round Casing Master Plug Gauges 46

D1 Basic Dimension of Power Tight Make-Up 65

D2 SR22 Casing Round Thread Form 66

5M Basic Dimensions of Buttress Casing Threads Hand-Tight Make-Up 92

6M Buttress Casing Thread Form and Dimensions—for Casing Sizes 41/2 through 133/8 93

7M Buttress Casing Thread Form and Dimensions—for Casing Sizes 16 and Larger 94

D2M SR22 Casing Round Thread Form 95

G1 Machining Details—Sizes 5 through 75/8 104

G2 Machining Details—Sizes 85/8 through 103/4 105

G3 Box and Pin Entrance Threads—Sizes 5 through 75/8 106

G4 Product Thread Form—Sizes 5 through 75/8 107

G5 Box and Pin Entrance Threads—Sizes 85/8 through 103/4 108

G6 Product Thread Form—Sizes 85/8 through 103/4 109

G7 Gauging Practice for Extreme-Line Casing 110

G8 Bolt Circles and Back-Up Plate Dimensions for Extreme-Line Casing Master Plug Gauges 111

G9 Gauge Details—Size Designations 5 through 75/8 112

G10 Gauge Details—Size Designations 85/8 through 103/4 113

G11 Gauge Thread Form—Size Designations 5 through 75/8 114

G12 Gauge Thread Form—Size Designations 85/8 through 103/4 115

Tables

1. Line Pipe Thread Height Dimensions 6

2. Tolerances on Line Pipe Dimensions 6

3. Line Pipe Thread Dimensions 7

4. Casing Round Thread Height Dimensions 9

5. Tolerances on Casing Round Thread Dimensions 9

6. Casing Short-Thread Dimensions 10

7. Casing Long-Thread Dimensions 11

8. Tolerances on Buttress Casing Thread Dimensions 15

9. Buttress Casing Thread Dimensions 16

10. Tubing Round Thread Height Dimensions 18

11. Tolerances on Tubing Round Thread Dimensions 19

12. Non-Upset Tubing Thread Dimensions 20

13. External-Upset Tubing Thread Dimensions 20

14. External-Upset Long Round Thread Dimensions for Fiberglass Pipe 21

15. Integral-Joint Tubing Thread Dimensions 21

16. Round Nosed Ends 22

17. Compensated Thread Lengths for Measurements Parallel to the Taper Cone 28

18. Line Pipe Thread Gauge Dimensions 47

19. Short and Long Round Casing Thread Gauge Dimensions 48

20. Buttress Casing Thread Gauge Dimensions 49

21. Non-Upset Tubing Thread Gauge Dimensions 50

22. External-Upset Tubing Thread Gauge Dimensions 51

23. Integral-Joint Tubing Thread Gauge Dimensions 51

24. Gauge Thread Height Dimensions for Line Pipe 52

25. Gauge Thread Height Dimensions for Round Thread Casing and Tubing 52

26. Tolerances on Gauge Dimensions for Line Pipe 53

27. Tolerances on Gauge Dimensions for Round Thread Casing and Tubing 54

28. Tolerances on Gauge Dimensions for Buttress Casing 55

D1 Enhanced Leak Resistance LTC Thread Dimensions 67

D2 Dimensional Tolerances on SR22 Casing 8-Round Thread Dimensions 68

1M Line Pipe Thread Dimensions 70

2M Tolerances on Line Pipe Thread Dimensions 70

3M Line Pipe Thread Dimensions 71

4M Casing Round Thread Height Dimensions 72

5M Tolerances on Casing Round Dimensions 73

6M Casing Short-Thread Dimensions 74

7M Casing Long-Thread Dimensions 75

8M Tolerances on Buttress Casing Thread Dimensions 76

9M Buttress Casing Thread Dimensions 77

10M Tubing Round Thread Height Dimensions 77

11M Tolerances on Tubing Round Thread Dimensions 78

12M Non-Upset Tubing Thread Dimensions 79

13M External-Upset Tubing Thread Dimensions 79

14M External-Upset Long Round Thread Dimensions for Fiberglass Pipe 80

15M Integral-Joint Tubing Thread Dimensions 80

16M Round Nosed Ends 81

17M Compensated Thread Lengths for Measurements Parallel to the Taper Cone 81

D1M Enhanced Leak Resistance LTC Thread Dimensions 82

D2M Dimensional Tolerances on SR22 Casing 8-Round Thread Dimensions 83

G1M Extreme-Line Casing—Label 1—5 through 75/8 84

G2M Extreme-Line Casing—Label 1—85/8 through 103/4 86

G3M Inspection of Extreme-Line Threads and Seals with Dimensions and Tolerances 88

G1 Extreme-Line Casing—Sizes 5 through 75/8 116

G2 Extreme-Line Casing—Sizes 85/8 through 103/4 118

G3 Inspection of Extreme-Line Threads and Seals with Dimensions and Tolerances 120

G4 Gauge Dimensions for Extreme-Line Casing 123

G5 Tolerances on Gauge Dimensions for Extreme-Line Casing 124

Specification for Threading, Gauging and Thread Inspection of Casing, Tubing, and Line Pipe Threads

1. Scope

   1. COVERAGE

      This Specification covers dimensions and marking requirements for API Master thread gauges. Additional product threads and thread gauges as well as instruments and methods for the inspection of threads for line pipe, round thread casing, buttress casing, and extreme-line casing connections are included. It is applicable when so stipulated in the API standard governing the product. The inspection procedures for measurements of taper, lead, height, and angle of thread are applicable to threads having 111/2 or less turns per in. (111/2 or less turns per 25,4 mm). All thread dimensions shown without tolerances are related to the basis for connection design and are not subject to measurement to determine acceptance or rejection of product.

      By agreement between the purchaser and manufacturer, the supplemental requirements for Enhanced Leak Resistance LTC in SR22 shall apply.

      
      

   2. INSPECTION

      Thread inspection applies at the point of manufacture prior to shipment, to inspection at any intermediate point, to inspection subse- quent to delivery at destination, and to inspection by inspectors representing the purchaser or the manufacturer. The manufacturer may, at his or her option, use other instruments or methods to control manufacturing operations; but acceptance and rejection of the product shall be governed solely by the results of inspection made in accordance with the requirements of this Specification.

      
      

   3. OTHER REQUIREMENTS

      The applicable product specification should be consulted for requirements not given herein.

      
      

2. References

   1. GENERAL

      This Specification includes by reference, either in total or in part, the most recent editions of the following standards. API

      RP 5A3 Recommended Practice on Thread Compounds for Casing, Tubing and Line Pipe

      RP 5B1 Gauging and Inspection of Casing, Tubing, and Line Pipe Threads

      RP 5C1 Care and Use of Casing and Tubing Spec 5CT Specification for Casing and Tubing Spec 5L Specification for Line Pipe

      ASME1

      B1.3M Screw Thread Gauging Systems for Dimensional Acceptability—Inch and Metric Screw Threads

      
      

   2. REQUIREMENTS

      Requirements of other standards included by reference in this Specification are essential to the safety and interchangeability of the equipment produced.

      
      

3. Definitions

   1. defect: Imperfection of sufficient magnitude to warrant rejection of the product based on the stipulations of the applicable specification.

   2. imperfection: Discontinuity or irregularity in the product detected by methods outlined in the applicable specification.

   3. may: Used to indicate that a provision is optional.

1ASME International, 3 Park Avenue, New York, New York 10016, www.asme.org.

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