tube-in-tube structure
1.CALCULATION OF MONOLITHIC STABILITY OF FRAM ED TUBE STRUCTURE IN SUPERHIGH BUILDINHS
6.The necessity and essentiality of promoting the structure optimization of steel rolling equipment was described through introducting the present status of steel rolling equipment of plate mill, hot/cold wide strip mill, latge section mill,continuous bar mill, high speed wire rod mill and eeamless steel tube mills in China, as well as the further trend of steel markets botb abroad and at home and tbe, requirement for tecbnical progress in the branchs of national economy.

