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API Std 560 Addendum 1Addendum to Fired Heaters for General Refinery Service, Fifth EditionAmendment by American Petroleum Institute, 05/01/2021
API SPEC 19LHAddendum to Liner Hanger Equipment, First EditionAmendment by American Petroleum Institute, 05/01/2021
API Bull 587Guidance for the Development of Ultrasonic Examiner Qualification Programs, First Editionstandard by American Petroleum Institute, 05/01/2021
API RP 5C5 Addendum 1Addendum to Procedures for Testing Casing and Tubing Connections, Fourth EditionAmendment by American Petroleum Institute, 05/01/2021
API Std 600Steel Gate Valves - Flanged and Butt-welding Ends, Bolted Bonnets, Fourteenth Editionstandard by American Petroleum Institute, 05/01/2021
API TR 655Vapor Corrosion Inhibitors for Storage Tanks, First Editionstandard by American Petroleum Institute, 04/01/2021
API Std 609Butterfly Valves: Double-flanged, Lug- and Wafer-type, and Butt-welding Ends, Ninth Editionstandard by American Petroleum Institute, 04/01/2021
API RP 585Pressure Equipment Integrity Incident Investigation, Second Editionstandard by American Petroleum Institute, 04/01/2021
API Spec 15LR Errata 2Errata to Specification for Low Pressure Fiberglass Line Pipe, Seventh EditionAmendment by American Petroleum Institute, 04/01/2021
API Std 2350Overfill Prevention for Storage Tanks in Petroleum Facilities, Fifth Edition, Includes Errata 1 (2021)Amendment by American Petroleum Institute, 04/01/2021
API Spec 2B Addendum 1Addendum 1 to Specification for the Fabrication of Structural Steel PipeAmendment by American Petroleum Institute, 03/01/2021
API RP 5L3 Errata 1Errata to Recommended Practice for Conducting Drop-Weight Tear Tests on Line Pipe, Fourth EditionAmendment by American Petroleum Institute, 03/01/2021