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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.
Heat Recovery Systems, First Edition
Standard published on 1.6.2022
Selected format:Oilfield Explosives Safety, Third Edition
Standard published on 1.10.2019
Selected format:Machinery Protection Systems, Sixth Edition
Standard published on 1.7.2025
Selected format:Special-purpose Couplings for Petroleum, Chemical, and Gas Industry Services, Fifth Edition, Includes Errata 1 (2024) and Errata 2 (2026)
Standard published on 1.8.2020
Selected format:Errata 1 to Special-purpose Couplings for Petroleum, Chemical, and Gas Industry Services, Fifth Edition
Adjunct of the standard published on 1.6.2024
Selected format:Errata 2 to Special-purpose Couplings for Petroleum, Chemical, and Gas Industry Services, Fifth Edition
Adjunct of the standard published on 1.2.2026
Selected format:Packaged, Integrally Geared Centrifugal Air Compressors for Petroleum, Chemical, and Gas Industry Services, Fifth Edition
Standard published on 1.8.2019
Selected format:Centrifugal Fans for Petroleum, Chemical and Gas Industry Services, Third Edition
Standard published on 1.12.2014
Selected format:Centrifugal Fans for Petroleum, Chemical and Gas Industry Services - Errata
Adjunct of the standard published on 31.10.2002
Selected format:Positive Displacement Pumps - Reciprocating, Includes Errata (May 2014), Errata 2 (April 2015), and Errata 3 (November 2025)
Standard published on 1.12.2010
Selected format:Latest update: 2026-04-21 (Number of items: 2 274 412)
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