API 6D Errata Supplement 2 & Errata - Specification for Pipeline Valves (Gate, Plug, Ball and Check Valves) standard by American Petroleum Institute, 12/01/1998
API 653-Addendum 3 Tank Inspection, Repair, Alteration, and Reconstruction, Addendum 3 Amendment by American Petroleum Institute, 12/01/1998
API 653-Addendum 2 Tank Inspection, Repair, Alteration, and Reconstruction, Addendum 2 Amendment by American Petroleum Institute, 12/01/1997
API G0S197 Organization and Procedures for Standardization of Oilfield Equipment and Materials standard by American Petroleum Institute, 06/01/1997
API 653-Addendum 1 Tank Inspection, Repair, Alteration, and Reconstruction, Addendum 1 Amendment by American Petroleum Institute, 12/01/1996
API 521 Errata 1 Errata 1 - Guide for Pressure-Relieving and Depressuring Systems standard by American Petroleum Institute, 02/15/1999
API 5C3 Supplement 1 Bulletin on Formulas and Calculations for Casing, Tubing, Drill Pipe, and Line Pipe Properties Amendment by American Petroleum Institute, 04/15/1999
API 13B2 Supplement 1 Supplement 1 - Recommended Practice Standard Procedure for Field Testing Oil-Based Drilling Fluids Amendment by American Petroleum Institute, 05/31/2000
API 10A Addendum 1 Addendum 1 - Specification for Cements and Materials for Well Cementing Amendment by American Petroleum Institute, 04/01/2000
API 653-Addendum 4 Tank Inspection, Repair, Alteration, and Reconstruction, Addendum 4 Amendment by American Petroleum Institute, 12/01/1999
API 10B Addendum 1 Addendum 1 - Recommended Practice for Testing Well Cements Amendment by American Petroleum Institute, 10/01/1999
API 13B1 Addendum 1 Addendum 1 - Recommended Practice Standard Procedure for Field Testing Water-Based Drilling Fluids Amendment by American Petroleum Institute, 05/31/2000