JSW Steel's production rose more than eight per cent to 3.1 million tonnes (MT) in the first quarter ended June 30.
The Sajjan Jindal-led firm had produced 2.86 MT crude steel in the April-June quarter of last fiscal, it said in a statement.
Production of flat products was at 2.43 MT during the reporting quarter compared to 2.23 MT a year ago, clocking a growth of nine per cent.
However, the rate of growth in the production of long products was better than flat products.
JSW Steel produced 0.52 MT long products during the quarter compared to 0.45 MT a year earlier.
Flat products are generally used in automobile and consumer durables sectors. Long products find application in the construction sector.