It discusses the current combination,existing problems and combination direction of rolling mills in large-sized iron and steel industry in our country,and provides some suggestions.

Great achievements in marine science and technology in china lay the foundation of exploiting marine mineral resources and building marine-type steel works.

In order to probe the way of abolishing the secondary remelting process of pig iron in Shanghai,some new technologies such as Mini-Mill, Hot charging in EAF, MBF-MiniMill, Fastmet Direct Reduction, Tecnored Process and Cleansmelt Process were analyzed and compared, as well as their mature level, investment and production cost.