The present situation of
iron and steel industry in China is reviewed.It is pointed out that the manufacturing and processing
technology in the key enterprises have reached a "critical" state,from which independently innovated metallurgical process of iron and steel can be obtained if efforts are continuously contributed.It is described that in the recent 50 years,
iron and steel industry changed from processing technology to engineering science,including the searching for equilibrium reduction of liquid steel and steel refining as well as the searching for the un-equilibrium solidification and rolling.The iron and steel industry must be the model of
circular economy so as to co-exist with other industries and develop further.Under the guidance of the principle of circular economy,new technology,new processing and new type of steel product must be developed and the ability of designing up to date metallurgy equipments and combined manufacturing must be raised.Through the way stated above,China can be developed from a country of steel with great quantity to a country of steel with great quality.