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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.
Drill Stem Valves, First Edition, Includes Addendum 1 (2025)
Standard published on 1.4.2024
Selected format:Addendum 1 to Drill Stem Valves, First Edition
Adjunct of the standard published on 1.1.2025
Selected format:Standard Practice for Manual Sampling of Petroleum and Petroleum Products, Sixth Edition
Standard published on 1.9.2022
Selected format:Standard Practice for Automatic Sampling of Petroleum and Petroleum Products, Sixth Edition
Standard published on 1.9.2022
Selected format:Standard Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products, Third Edition
Standard published on 1.8.2025
Selected format:Standard Practice for Sampling and Handling of Fuels for Volatility Measurement, Sixth Edition
Standard published on 1.1.2024
Selected format:Standard Practice for Manual Piston Cylinder Sampling for Volatile Crude Oils, Condensates, and Liquid Petroleum Products, Second Edition
Standard published on 1.9.2022
Selected format:Refrigerated Light Hydrocarbon Fluids - Sampling of Liquefied Natural Gas - Continuous and Intermittent Methods, First Edition
Standard published on 1.5.2020
Selected format:Definition of Onshore Gas Gathering Lines, Second Edition, Includes Addendum 1 (2023)
Standard published on 29.2.2020
Selected format:Addendum 1 to Definition of Onshore Gas Gathering Lines, Second Edition
Adjunct of the standard published on 1.1.2023
Selected format:Latest update: 2026-03-13 (Number of items: 2 266 261)
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