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Steel microalloying combinations are studied, and heat treatment regimes are determined for preparing the required level of mechanical properties providing high quality characteristics for steels used in the manufacture of casings of strength group K55 according to the API standard Spec 5CT, including cold resistance to −60°C.
The Vyksa Metallurgical Plant now has the capability of subjecting 100% of its pipes to heat treatment (both local and bulk treatment). A recent decision on the regimes that will be used for bulk heat treatment will allow the plant to produce high-quality oil-and gas-line pipe and casing. In April 2007, the Vyksa plant began producing commercial batches of casing with the strength ratings E and N80Q...
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