Research directions and open problems are also discussed according to some other aspects besides the difference between the long flows and short flows.

Practice of short process of cleaning and carding;

The management process r estructuring can overcome some disadvantages of traditional structure, such as unsmooth information transportation, high management cost, lower efficiency and information transpor tation distortion etc, to seek for the aims of short process and high efficienc y, and quickly control management function, so that competitive ability of ente.

The equipment arrangement at hot charge area and furnace area effectively matches the short process continuous rolling production.

Preparation of Tin Prill by Short Flow Casting;

This paper describes the typical long flow technique and short flow technique in iron and steel metallurgy,explains the necessity of reconstructing Chinese short flow for domestic iron and steel industry according to the practical condition of lack of natural gas at home,presents several new short flow modes suitable for China.

Application Practice of Shortened Process Blowing-carding Unit;

Desizing, scouring and bleaching machines for shortened process (I);

Desizing,scouring and bleaching machines for shortened process;

The paper has briefly outlined the evolution and features of compact process, emphatically pointed out some application of new technology in EAF steelmaking, and presented some views of oneself to the development of compact process steelmaking of EAF in China.

This paper introduces the producing experiment of tube casing steel J55 in the thin slab continuous casing and rolling compact process mill of BX Steel,and designs chemical compositions and rolling parameters of J55.