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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.
Dry Gas Sealing Systems for Axial, Centrifugal, and Rotary Screw Compressors and Expanders – Data Sheet
Standard published on 1.6.2018
Selected format:Pump Repair
Standard published on 1.4.2023
Selected format:SPECIFICATION FOR WELLHEAD AND CHRISTMAS TREE EQUIPMENT *** ISO ADOPTION FROM ISO 10423:2009 *** *** FOR MONOGRAM LICENSEES ONLY ***
Standard published on 1.11.2011
Selected format:Chinese Language - SPECIFICATION FOR WELLHEAD AND CHRISTMAS TREE EQUIPMENT *** ISO ADOPTION FROM ISO 10423:2009 ***
Standard published on 1.11.2011
Selected format:Specification for Wellhead and Tree Equipment
Standard published on 1.8.2022
Selected format:Specification for Wellhead and Christmas Tree Equipment
Standard published on 1.4.2019
Selected format:SPECIFICATION FOR WELLHEAD AND CHRISTMAS TREE EQUIPMENT ** 2" 3-RING POLY WHITE BINDER BLACK PRINT **
Standard published on 1.1.2000
Selected format:Age-hardened Nickel-based Alloys for Oil and Gas Drilling and Production Equipment
Standard published on 1.7.2022
Selected format:Age-hardened Nickel-based Alloys for Oil and Gas Drilling and Production Equipment
Standard published on 1.2.2019
Selected format:Technical Report on Capabilities of API Flanges Under Combinations of Load
Standard published on 1.3.2017
Selected format:Latest update: 2025-07-11 (Number of items: 2 208 012)
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