Cast lot material originating from a final melt.

  • NOTE: For remelted alloys, a heat is defined as the raw material originating from a single remelted ingot.

Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards


Hurricane Evaluation and Assessment Team.

Source: API RP 2SIM, Structural Integrity Management of Fixed Offshore Structures, First Edition, November 2014. Global Standards


Metal produced by a single cycle of a batch melting process.

Source: API SPEC 5CT, Specification for Casing and Tubing, Upstream Segment, Ninth Edition, July 2011 (Errata September 2012). Global Standards



Material originating from a final melt, or for remelted alloys, the raw material originating from a single remelted ingot.

Source: API Specification 20E, Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries, Second Edition, February 2017. Global Standards

Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards

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