Clientele Steel Authority of India Limited National Aluminium Company Ltd. NMDC Limited NTPC Limited Hindustan Copper Ltd. Kirloskar Ferrous Industries Ltd. Tata Projects Ltd. Tata Steel BSL Ltd. Tata Steel Ltd, Global Wires India (GWI) Tata Metaliks Ltd. Vedanta Electrosteel, Bokaro Vedanta sesa goa iron ore ESAB Hindustan Zinc Limited Srikalahasthi Pipes Jayswal Neco India Ltd. Shyam Group Rashmi Group Binayak Hi-Tech Engineering Ltd Metco Limited BMM Ispat Ltd. Maharashtra Seamless Ltd. Jindal Saw Ltd. Jindal Stainless Ltd.