Jun 25, 2019· Tata Steel (formerly Tata Iron and Steel Company Limited) is a subsidiary of the Tata Group. Established in 1907, Tata Steel had a great 2017 with revenues up 30 percent. With operations in India, the company employs around 75,000 staff members across five continents. As of summer 2018, Tata Steel is the largest steel producer in India.