API Spec 11AX Addendum 1 Addendum to Specification for Subsurface Sucker Rod Pump Assemblies, Components, and Fittings, Thirteenth Edition Amendment by American Petroleum Institute, 05/01/2019
API Std 17F Errata 2 Errata to Specification for Subsea Production Control Systems, Fourth Edition Amendment by American Petroleum Institute, 05/01/2019
API RP 581 Addendum 1 Addendum to Risk-Based Inspection Methodology, Third Edition Amendment by American Petroleum Institute, 04/01/2019
API Spec 6DSS Addendum 1 Addendum to Specification for Subsea Pipeline Valves, Third Edition Amendment by American Petroleum Institute, 04/01/2019
API TR 17TR8 Addendum 1 Addendum to High-pressure High-temperature Design Guidelines, Second Edition Amendment by American Petroleum Institute, 04/01/2019
API Spec 6A Errata 1 Errata to Specification for Wellhead and Tree Equipment, Twenty-First Edition Amendment by American Petroleum Institute, 04/01/2019
API RP 591 Process Valve Qualification Procedure, Sixth Edition standard by American Petroleum Institute, 04/01/2019
API TR 978 Monolithic Refractories: Manufacture, Properties, and Selection, First Edition standard by American Petroleum Institute, 03/01/2019
API Spec 10A Specification for Cements and Materials for Well Cementing, Twenty-Fifth Edition, Includes Addendum (2019) standard by American Petroleum Institute, 03/01/2019
API Spec 20E Addendum 2 Addendum to Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries, Second Edition Amendment by American Petroleum Institute, 03/01/2019
API RP 8B Addendum 1 Addendum to Inspections, Maintenance, Repair and Remanufacture of Hoisting Equipment, Eighth Edition Amendment by American Petroleum Institute, 03/01/2019
API TR 17TR8 Errata 1 Errata to High-pressure High-temperature Design Guidelines, Second Edition Amendment by American Petroleum Institute, 03/01/2019