API Spec 5CRA (R2015)
Specification for Corrosion Resistant Alloy Seamless Tubes for Use as Casing, Tubing and Coupling Stock, First Edition, Includes Errata (August, 2011)
standard by American Petroleum Institute, 02/01/2010
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API Std 20C
Closed Die Forgings for Use in the Petroleum and Natural Gas Industry, 2nd Edition
standard by American Petroleum Institute, 10/01/2015
API TR 977
ASTM C704 Test Variability Reduced to Allow Further Optimization of Erosion-resistant Refractories for Critical Oil Refining Applications, First Edition
standard by American Petroleum Institute, 02/01/2018
API Spec 13A Errata
Errata 1 & 2 for Specification for Drilling Fluid Materials, Eighteenth Edition
standard by American Petroleum Institute, 05/01/2015
API Spec 6D Addendum 2
Addenda 2 to Specification for Pipeline Valves, Twenty-third Edition (Identical to ISO 14313:2007)
Amendment by American Petroleum Institute, 08/01/2011
API Spec 7NRV (R2012)
Specification for Drill String Non-return Valves, First Edition
standard by American Petroleum Institute, 07/01/2006
API Spec 16C
Choke and Kill Equipment, Second Edition, Includes Errata 1&2 (2015), Errata 3&4 (2016), Addendum 1 (2016)
standard by American Petroleum Institute, 03/01/2015
API RP 941 Errata 2
Errata 2 to Steels for Hydrogen Service at Elevated Temperatures and Pressures in Petroleum Refineries and Petrochemical Plants, Eighth Edition
Amendment by American Petroleum Institute, 01/01/2018
API RP 934-A
Materials and Fabrication of 2-1/4Cr-1Mo, 2 1/4Cr-1Mo-1/4V, 3Cr-1Mo, and 3Cr-1Mo-1/4V Steel Heavy Wall Pressure Vessels for High-temperature, High Pressure Hydrogen Service, Third Edition
standard by American Petroleum Institute, 01/01/2019