Definition(s)
Corrosion-Resistant Ring Groove
Ring groove lined with a CRA or an austenitic stainless steel to resist metal-loss corrosion.
Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards
Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Corrosion-Resistant Ring Groove
Ring groove lined with metal resistant to metal-loss corrosion.
Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards
Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards