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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.
MPMS Chapter 5-Metering, Section 8-Measurement of Liquid Hydrocarbons by Ultrasonic Flow Meters, Third Edition
Standard published on 1.2.2025
Selected format:Wireline Operations and Procedures (Book 5 in Vocational Training Series)
Standard published on 1.1.1994
Selected format:Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1, and Division 2, Fourth Edition
Standard published on 1.6.2023
Selected format:Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1, and Zone 2, Third Edition
Standard published on 1.1.2025
Selected format:Onshore Oil and Gas Production Practices for Protection of the Environment
Standard published on 1.3.2001
Selected format:Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Eleventh Edition, Includes Errata 1 (2023) and Errata 2 (2025)
Standard published on 1.10.2022
Selected format:Errata 1 to Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Eleventh Edition
Adjunct of the standard published on 1.3.2023
Selected format:Errata 2 to Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Eleventh Edition
Adjunct of the standard published on 1.6.2025
Selected format:Sizing, Selection, and Installation of Pressure-relieving Devices Part I - Sizing and Selection, Tenth Edition, Includes Errata 1 (2023)
Standard published on 1.10.2020
Selected format:Errata 1 to Sizing, Selection, and Installation of Pressure-relieving Devices Part I - Sizing and Selection, Tenth Edition
Adjunct of the standard published on 1.5.2023
Selected format:Latest update: 2026-10-25 (Number of items: 2 208 009)
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