Heat Treatment (Heat Treating)
Alternate steps of controlled heating and cooling of materials for the purpose of changing physical or mechanical properties.
Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards
Source: API SPEC 16RCD, Specification for Drill Through Equipment—Rotating Control Devices, Upstream Segment, First Edition, February 2005. Global Standards