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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.
Errata 1 to Welding Processes, Inspection, and Metallurgy, Third Edition
Adjunct of the standard published on 1.9.2025
Selected format:Material Verification Program for New and Existing Assets, Fourth Edition
Standard published on 1.2.2023
Selected format:Fitness-For-Service
Standard published on 1.12.2021
Selected format:Fitness-For-Service Example Problems Manual, Second Edition
Standard published on 1.5.2024
Selected format:Development of FEA-based Reference Stress Solutions for Level 2 and Level 3 Crack Assessments
Standard published on 1.5.2025
Selected format:Elements of a Risk-Based Inspection Program, Fourth Edition, Includes Addendum 1 (2025)
Standard published on 1.8.2023
Selected format:Addendum 1 to Elements of a Risk-Based Inspection Program, Fourth Edition
Adjunct of the standard published on 1.3.2025
Selected format:Risk-based Inspection Methodology
Standard published on 1.1.2025
Selected format:Welding Guidelines for the Chemical, Oil, and Gas Industries, Fourth Edition
Standard published on 1.5.2023
Selected format:Corrosion Under Insulation and Fireproofing, Second Edition
Standard published on 1.3.2021
Selected format:Latest update: 2026-03-15 (Number of items: 2 266 660)
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