Apropos the report "INS Vikrant's first victory: Being built from Indian steel" (August 10), the steel grade DMR 249B that has gone into making the flight deck of the INS Vikrant - India's first indigenous aircraft carrier - has basically been developed and produced by SAIL's Alloy Steels Plant (ASP), Durgapur, in the form of continuous cast slabs. These slabs had subsequently been rolled into plates and heat-treated at SAIL's Rourkela Steel Plant . The steel grade DMR292A used in the indigenous submarine INS Arihant has also been developed at ASP, Durgapur, in the presence of Defence Metallurgical Research Laboratory scientists in April, 2013.
M M Nath, Manager (PR) ASP Durgapur
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