Structural steel and stainless steel team is mainly engaged in the research, manufacture, application research and development of advanced iron and steel materials, provides high performance steel for load bearing structural parts in aeronautics, nuclear technology, shipbuilding and etc. various alloys such as GX-8, 69111, GC-19, GC-11, GC-4 and etc have been developed, and deep research already carried on ultra high strength steel, such as A-100, 300M, PH13-8Mo, 15-5PH and etc, and have been applied on various aircrafts.