Specification for the Fabrication of Structural Steel Pipe

API SPECIFICATION 2B SIXTH EDITION, JULY 2001

EFFECTIVE DATE: JANUARY 1, 2002

REAFFIRMED, SEPTEMBER 2020

SPECIAL NOTES

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Copyright © 2001 American Petroleum Institute

FOREWORD

This specification is under the jurisdiction of the API Committee on Standardization of Offshore Structures.

The purpose of this specification is to provide standards for the fabrication of structural steel pipe formed from plate steel and suitable for use in construction of welded offshore structures.

This specification shall become effective on the date printed on the cover but may be used voluntarily from the date of distribution.

Fabricators interested in obtaining a monogram license should either write the API office 200 Massachusetts Avenue, NW, Suite 1100, Washington, DC 20001 for an application package or a copy of the Composite List of Manufacturers Licensed for Use of the API Monogram, Product No. G00006.

API publications may be used by anyone desiring to do so. Every effort has been made by the Institute to assure the accuracy and reliability of the data contained in them; how- ever, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss or dam- age resulting from its use or for the violation of any federal, state, or municipal regulation with which this publication may conflict.

Suggested revisions are invited and should be submitted to the general manager, Upstream Segment, American Petroleum Institute, 200 Massachusetts Avenue, NW, Suite 1100, Washington, DC 20001

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CONTENTS

Page

1. SCOPE 1

2. REFERENCES 1

3. DEFINITIONS 1

4. MATERIAL 1

5. FABRICATION 2

   1. General 2

   2. Welding Procedure Qualification 2

   3. Welder and Welding Operator Qualification 2

   4. Longitudinal Welds 2

   5. Girth Welds 2

      5.6 ................................................................................................................................3

6. DIMENSIONS AND TOLERANCES 3

   1. Diameter, Length, and Wall Thickness 3

   2. Roundness 3

   3. Circumference 3

   4. Straightness 3

   5. Pipe Ends 3

7. INSPECTION AND REPAIR 3

   1. Inspection 3

   2. Weld Inspection 3

   3. Nondestructive Examination 3

   4. Repair of Base Metal Imperfections 3

8. MARKING 4

APPENDIX A—SUPPLEMENTARY REQUIREMENTS 6

APPENDIX B—METRIC CONVERSION TABLE 8

Figures

1. 1—Plate Rolling Direction Orientation 6

   Tables

2. 1—Metric Conversion Table 8

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