International Steels was founded by Amir Sultan Chinoy in 2007 as a joint-venture between International Industries Limited, Sumitomo Corporation, and JFE Steel.[6][3] Its plant was commissioned in 2010 at a cost of $162 million and it had a capacity to produce 280,000 tons per annum of cold rolled coil from hot rolled coil, including 150,000 tons per annum of galvanized steel.[7] The plant is located in the industrial estate of Landhi.[8] The project received $18.40 million loan from the International Finance Corporation which included a convertible loan of $6.4 million.[7]
In March 2016, International Steel increasing its annual production capacity to over 500,000 metric tons which included 400,000 metric tons of galvanized steel.[5][10] The project which cost Rs 3.2 billion involved upgrading the cold rolling mill (CCM), adding a second galvanizing line, and establishing a colour coating steel plant.[10]
In June 2018, International Steel commissioned a new plant which further increased its production capacity to 1 million tons per annum.[11][12]