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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.
Product Life Cycle Management System Requirements for the Petroleum and Natural Gas Industries
Standard published on 1.5.2022
Selected format:Guidance on Changes to API Q1, Ninth Edition
Standard published on 1.6.2015
Selected format:Evaluation of Welding Requirements as Applicable to API Product Specifications
Standard published on 1.12.2017
Selected format:Manual of Petroleum Measurement Standards Chapter 19.1 Evaporative Loss from Fixed-roof Tanks
Standard published on 1.6.2022
Selected format:Documentation File for API Manual of Petroleum Measurement Standards Chapter 19.1 - Evaporative Loss from Fixed Roof Tanks
Standard published on 1.6.1994
Selected format:Manual of Petroleum Measurement Standards Chapter 19.2 Evaporative Loss from Floating-roof Tanks
Standard published on 1.8.2020
Selected format:Manual of Petroleum Measurement Standards Chapter 19.3—Evaporative Loss Measurement Part A—Wind Tunnel Test Method for the Measurement of Deck-Fitting Loss Factors for External Floating-Roof Tanks
Standard published on 1.2.2023
Selected format:Manual of Petroleum Measurement Standards Chapter 19.3—Evaporative Loss Measurement Part B—Air Concentration Test Method—Rim-Seal Loss Factors for Floating-Roof Tanks
Standard published on 1.2.2023
Selected format:Manual of Petroleum Measurement Standards Chapter 19.3—Evaporative Loss Measurement Part C—Weight Loss Test Method for the Measurement of Rim-Seal Loss Factors for Internal Floating-roof Tanks
Standard published on 1.5.2023
Selected format:Manual of Petroleum Measurement Standards Chapter 19.3—Evaporative Loss Measurement Part D—Fugitive Emission Test Method for the Measurement of Deck-Seam Loss Factors for Internal Floating-Roof Tanks
Standard published on 1.7.2023
Selected format:Latest update: 2025-07-20 (Number of items: 2 209 004)
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