JSW Steel said it has received the NCLT's approval for amalgamation of its four units. The company has merged Dolvi Minerals and Metals, Dolvi Coke, JSW Steel Processing Centres, and JSW Salav with JSW Steel. It further said it acquired Piombino Steel from JSW Techno Projects Management, adding that JSW's Makler is now a fully-owned subsidiary of Piombino.