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API Spec 20A

Carbon Steel, Alloy Steel, Stainless Steel, and Nickel Base Alloy Castings for Use in the Petroleum and Natural Gas Industry, First Edition, Includes Addendum 1 (2013), Addendum 2 (2015), Errata 1, August 2015
standard by American Petroleum Institute, 03/01/2012

API Spec 11B Errata 2

Errata 2 to Specification for Sucker Rods, Polished Rods and Liners, Couplings, Sinker Bars, Polished Rod Clamps, Stuffing Boxes, and Pumping Tees
Amendment by American Petroleum Institute, 02/01/2011

API Std 6ACRA Errata 1

Errata to Age-hardened Nickel-based Alloys for Oil and Gas Drilling and Production Equipment, First Edition
Amendment by American Petroleum Institute, 10/01/2015

API Spec 2W

Specification for Steel Plates for Offshore Structures, Produced by Thermo-Mechanical Control Processing (TMCP), Sixth Edition
standard by American Petroleum Institute, 01/01/2019