| http://www.w3.org/ns/prov#value | - A casing for transporting fluids including oil, gas and steam, wherein the casing is made from a steel alloy characterized by a quench-and-temper micro-structure and by an alloy chemistry comprising by weight of a carbon range of 0.15% to 0.35%, a manganese range of 0.60% to 1.10%, a molybdenum range of at least 0.15%, a sulfur range of less than 0.002%, an aluminum range of less than or equal to
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