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API Std 537Flare Details for General Refinery and Petrochemical Service, First Editionstandard by American Petroleum Institute, 08/01/2003
API Std 536Post-Combustion NOx Control for Fired Equipment in General Refinery Services and Petrochemical Services, Third Editionstandard by American Petroleum Institute, 09/01/2017
API Std 530 Errata 1Errata for Calculation of Heater-tube Thickness in Petroleum Refineries, Sixth Edition (ISO 13704:2007, Identical)Amendment by American Petroleum Institute, 01/01/2009
API Std 530 Addendum 2Addendum to Calculation of Heater-tube Thickness in Petroleum Refineries, Seventh EditionAmendment by American Petroleum Institute, 12/01/2021
API Std 530Calculation of Heater-tube Thickness in Petroleum Refineries, Seventh Editionstandard by American Petroleum Institute, 04/01/2015
API Std 530Calculation of Heater-tube Thickness in Petroleum Refineries, Sixth Edition (ISO 13704:2007, Identical), Includes Errata (2009)standard by American Petroleum Institute, 09/01/2008
API Std 530Calculation of Heater Tube Thickness in Petroleum Refineries ISO 13704:2001 (E), Petroleum and natural gas industries-Calculation of heater tube thickness in petroleum refineries, Fifth Editionstandard by American Petroleum Institute, 01/01/2003
API Std 53 Addendum 1Addendum 1 to Blowout Prevention Equipment Systems for Drilling Wells, Fourth EditionAmendment by American Petroleum Institute, 07/01/2016
API Std 53Blowout Prevention Equipment Systems for Drilling Wells, Fourth Edition, Includes Addendum 1standard by American Petroleum Institute, 11/01/2012
API Std 527 (R2007)Seat Tightness of Pressure Relief Valvesstandard by American Petroleum Institute, 07/01/1991
API Std 527Seat Tightness of Pressure Relief Valves, Fourth Editionstandard by American Petroleum Institute, 11/01/2014
API Std 526 Errata 2Errata 2 to Flanged Steel Pressure Relief Valves, Fifth Edition, Includes Errata (May 2009), Errata 2 (Oct 2012)Amendment by American Petroleum Institute, 10/01/2012