R & D Centre for Iron & Steel, Steel Authority of India Ltd. | 653 followers on LinkedIn. R & D Centre for Iron & Steel (RDCIS) at Ranchi is a corporate R & D of Steel Authority of India - the largest steel producer in India. It caters to the need of all its steel plants covering the entire spectrum of research starting from raw materials to finsihed steel products. RDCIS houses all the sophistacated analytical and diagonistic equipements and pilot units for undertaking research of fundamental/ basic understanding nature to plant performance improvement.