After its duplex stainless steel output broke through 10,000 ton, TISCO has made persistent efforts and successfully produced duplex stainless steel used for key part of passenger trains, replacing the imported product of this kind. This batch of product will be applied in a subway line in a city of China. It symbolized TISCO's further progress in terms of product development, production process, technology management and product quality of duplex stainless steel. Duplex stainless steel is a steel grade containing high technology and high added value. It reflects the level of technology and management of an enterprise. By now, TISCO has owned the capability of producing cold rolling plate, medium and heavy plate, pipe billet, steel pipe, and etc, covering the whole specification and variety of duplex stainless steel products.