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API (American Petroleum Institute) is a leader in the development of petroleum and petrochemical equipment and operating standards covering topics that range from drill bits to environmental protection. These embrace proven, sound engineering and operating practices and safe, interchangeable equipment and materials. Many have been incorporated into state and federal regulations and adopted by ISO for worldwide acceptance.
Addendum 1 to Rotary Drill Stem Elements
Adjunct of the standard published on 1.3.2025
Selected format:Errata 1 to Rotary Drill Stem Elements
Adjunct of the standard published on 1.9.2023
Selected format:Errata 2 to Rotary Drill Stem Elements
Adjunct of the standard published on 1.10.2025
Selected format:Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition, Includes Errata (2017), Errata 2 (2019), Addendum 1 (2020), Addendum 2 (2023), and Addendum 3 (2025)
Standard published on 1.1.2017
Selected format:Addendum to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
Adjunct of the standard published on 1.3.2020
Selected format:Addendum to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
Selected format:Addendum to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
Adjunct of the standard published on 1.9.2025
Selected format:Errata to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
Adjunct of the standard published on 1.8.2017
Selected format:Errata to Specification for Threading and Gauging of Rotary Shouldered Thread Connections, Second Edition
Selected format:Manual of Petroleum Measurement Standards- Chapter 7.1 - Temperature Determination— Liquid-in-Glass Thermometers, Third Edition
Standard published on 1.10.2024
Selected format:Latest update: 2026-03-13 (Number of items: 2 266 261)
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