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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.
Specification for Field Welded Tanks for Storage of Production Liquids, Thirteenth Edition
Standard published on 1.5.2025
Selected format:Specification for Shop-welded Tanks for Storage of Production Liquids, Fourteenth Edition
Standard published on 1.10.2024
Selected format:Process Design of Oil and Gas Separators and Scrubbers, Ninth Edition
Standard published on 1.9.2024
Selected format:Operations, Maintenance and Testing of Firebox Flame Arrestors
Standard published on 1.11.1994
Selected format:Specification for Fiberglass Reinforced Plastic Tanks, Fifth Edition
Standard published on 1.5.2022
Selected format:Installation, Operation, Maintenance, Inspection, and Repair of Tanks in Production Service, Seventh Edition, Includes Errata 1 (2025)
Standard published on 1.7.2025
Selected format:Statistical Aspects of Measuring and Sampling: Statistical Concepts and Procedures in Measurement, First Edition, Includes Errata (July 2013)
Standard published on 1.6.1985
Selected format:Statistical Methods of Evaluating Meter Proving Data, Third Edition
Standard published on 1.4.2026
Selected format:Manual of Petroleum Measurement Standards, Measurement Uncertainty, Second Edition
Standard published on 30.11.2017
Selected format:Drilling Fluids Materials, Nineteenth Edition, Includes Addendum 1 (2020), Addendum 2 (2022), and Errata 1 (2024)
Standard published on 1.10.2019
Selected format:Latest update: 2026-10-22 (Number of items: 2 207 753)
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