Tianjin Bohai Iron and Steel Group was officially opened for business on July 13. Its four shareholders are: Tianjin Steel Pipe, China's largest OCTG casing production base; Tianjin Tiantie Group, a producer of hot rolled coil, medium plate and rebar; Tianjin Metallurgy Group making hot rolled coil and cold rolled sheet; and Tianjin Steel Group, a medium plate and wire rod producer.