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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.
Axial and Centrifugal Compressors and Expander-compressors, Ninth Edition
Standard published on 1.4.2022
Selected format:Reciprocating Compressors for Petroleum, Chemical, and Gas Industry Services, Sixth Edition
Standard published on 1.5.2024
Selected format:Rotary-Type Positive-Displacement Compressors for Petroleum, Petrochemical, and Natural Gas Industries, Fifth Edition
Standard published on 1.12.2010
Selected format:Design and Construction of Large, Welded, Low-Pressure Storage Tanks, Twelfth Edition, Includes Addendum 1 (2014), Addendum 2 (2018), Addendum 3 (2021), Addendum 4 (2025), and Errata 1 (2025)
Standard published on 1.10.2013
Selected format:Addendum 1 to Design and Construction of Large, Welded, Low-Pressure Storage Tanks, Twelfth Edition
Adjunct of the standard published on 1.11.2014
Selected format:Errata 1 to Design and Construction of Large, Welded, Low-Pressure Storage Tanks, Twelfth Edition
Adjunct of the standard published on 1.3.2025
Selected format:Reconditioning of Metallic Gate, Globe, and Check Valves, Fifth Edition
Standard published on 1.10.2022
Selected format:Type Testing of Process Valve Packing for Fugitive Emissions, Third Edition, Includes Addendum 1 (2022)
Standard published on 1.10.2018
Selected format:Addendum 1 to Type Testing of Process Valve Packing for Fugitive Emissions, Third Edition
Adjunct of the standard published on 1.3.2022
Selected format:Steel Globe Valves - Flanged and Butt-welding Ends, Bolted Bonnets, Second Edition, Includes Errata 1 (2024)
Standard published on 1.1.2021
Selected format:Latest update: 2025-12-21 (Number of items: 2 252 887)
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