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API RP 11ER

Recommended Practice for Guarding of Pumping Units, Fourth Edition
standard by American Petroleum Institute, 07/01/2022

API Spec 20E Errata 2

Errata 2 to Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries, Second Edition
Amendment by American Petroleum Institute, 05/01/2022

API Spec 5L

Specification for Line Pipe, Twenty-second Edition Includes Errata
standard by American Petroleum Institute, 03/01/1967

API Std 565

Thermal Reactors for Sulfur Recovery Units in General Refinery Services
standard by American Petroleum Institute, 06/01/2022

API Std 602

Gate, Globe, and Check Valves for Sizes DN 100 (NPS 4) and Smaller for the Petroleum and Natural Gas Industries, Eleventh Edition
standard by American Petroleum Institute, 05/01/2022