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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.
Welded Plate-block Heat Exchangers, First Edition
Standard published on 1.10.2025
Selected format:Recommended Practice 85, Use of Subsea Wet-gas Flowmeters in Allocation Measurement Systems
Standard published on 1.8.2003
Selected format:Addendum to Recommended Practice 85, Use of Subsea Wet-gas Flowmeters in Allocation Measurement Systems
Adjunct of the standard published on 1.1.2013
Selected format:API Standards 620, 650, and 653 Interpretations -- Tank Construction and In-Service Inspection - Answers to Technical Inquiries
Standard published on 1.11.1997
Selected format:Recommended Practice for Field Analysis of Crude Oil Samples Containing from Two to Fifty Percent Water by Volume, First Edition
Standard published on 1.8.2007
Selected format:INTERPRETATIONS 88
Standard published on 1.1.1988
Selected format:Climate Change Policy Commitments: A Reality Check
Standard published on 1.12.1997
Selected format:Drilling and Production Hoisting Equipment, Includes Addendum 1 (2001)
Standard published on 1.12.1997
Selected format:Inspections, Maintenance, Repair and Remanufacture of Hoisting Equipment, Eighth Edition, Includes Addendum 1 (2019) and 2 (2021) and Errata 1 (2019)
Standard published on 1.5.2014
Selected format:Addendum to Inspections, Maintenance, Repair and Remanufacture of Hoisting Equipment, Eighth Edition
Adjunct of the standard published on 1.3.2019
Selected format:Latest update: 2026-03-13 (Number of items: 2 266 261)
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