All the annexes turned up in the 44th Edition (2008).
This was the biggest shake up for decades.
My understanding was that it tried to incorporate as standard options all the supplementary requirements everyone produced on top of API 5L before then.
Didn't really seem to work as everyone still added their own little additions, but it was a good try.
The 43rd edition had a set of APPENDIXES.
APPENDIX A SPECIFICATION FOR WELDED JOINTERS (NORMATIVE) . . . . . 79
APPENDIX B REPAIR OF DEFECTS BY WELDING (NORMATIVE) . . . . . . . . . . 81
APPENDIX C REPAIR WELDING PROCEDURE (NORMATIVE). . . . . . . . . . . . . . 83
APPENDIX D ELONGATION TABLE (NORMATIVE) . . . . . . . . . . . . . . . . . . . . . . . 89
APPENDIX E DIMENSIONS, WEIGHTS, AND TEST PRESSURES
ÑSI UNITS (NORMATIVE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
APPENDIX F SUPPLEMENTARY REQUIREMENTS (NORMATIVE). . . . . . . . . 121
APPENDIX G GUIDED-BEND TEST JIG DIMENSIONS (NORMATIVE). . . . . . . 131
APPENDIX H PURCHASER INSPECTION (NORMATIVE) . . . . . . . . . . . . . . . . . . 143
APPENDIX I MARKING INSTRUCTIONS FOR API LICENSEES
(NORMATIVE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
APPENDIX J SUMMARY OF DIFFERENCES BETWEEN PSL 1 AND PSL 2
(INFORMATIVE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
APPENDIX K END LOAD COMPENSATION FOR HYDROSTATIC
TEST PRESSURES IN EXCESS OF 90% OF SPECIFIED
MINIMUM YIELD STRENGTH (NORMATIVE) . . . . . . . . . . . . . . . 151
APPENDIX M CONVERSION PROCEDURES. . . . .
Compared to the annexes of 44th and later versions
Annex A (normative) Specification for welded jointers ..................................................................................... 72
Annex B (normative) Manufacturing procedure qualification for PSL 2 pipe .................................................. 73
Annex C (normative) Treatment of surface imperfections and defects ........................................................... 75
Annex D (normative) Repair welding procedure ................................................................................................ 76
Annex E (normative) Non-destructive inspection for other than sour service or offshore service .............. 82
Annex F (normative) Requirements for couplings (PSL 1 only) ....................................................................... 94
Annex G (normative) PSL 2 pipe with resistance to ductile fracture propagation ......................................... 97
Annex H (normative) PSL 2 pipe ordered for sour service .............................................................................. 104
Annex I (normative) Pipe ordered as “Through the Flowline” (TFL) pipe ...................................................... 116
Annex J (normative) PSL 2 pipe ordered for offshore service ........................................................................ 118
Annex K (normative) Non-destructive inspection for pipe ordered for sour service and/or offshore
service .................................................................................................................................................... 133
Annex L (informative) Steel designations ......................................................................................................... 138
Annex M (informative) Correspondence of terminology between ISO 3183 and
its source documents ........................................................................................................................... 141
Annex N (normative) Identification/Explanation of Deviations .........................................................................142
Annex O (informative) API Monogram ............................................................................
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.