Hauv kev tsim cov hlau, ua haujlwm tau zoo thiab ua tau zoo dua cov khoom siv hluav taws xob tsis yooj yim, tab sis kuj tau ua kom muaj zog tshaj tawm rau hauv ntau yam khoom siv kub, tab sis kuj tau ua ntau yam khoom siv hluav taws xob Rolling kab, cov tuam txhab tuaj yeem ua tau thaum muaj kev loj hlob ntawm ntau yam kev lag luam thaum tswj cov qauv zoo tshaj plaws.
Nyob rau hauv lub plawv ntawm tus hlau kub dov txoj kab yog qhov ua tib zoo tsim cov khoom siv hluav taws xob, ua rau muaj kev kub siab rau lub caij sov, ua rau muaj kev kub siab rau lub sijhawm Xav tau cov duab .} Thaum kawg, ua tiav rau kev xa khoom rau cov neeg siv khoom loj thiab yog cov khoom siv rau kev sib koom ua ke rau txhua cov khoom lag luam
Nqis peev nyob rau hauv ib txoj kab kub yob tsis yog tsuas yog hais txog cov khoom siv txhim kho; Nws yog hais txog kev txhim kho kev nce qib thiab kev sib tw hauv cov khoom lag luam steel, cov khoom lag luam muaj peev xwm ua tau cov khoom lag luam zoo nkauj, tuaj yeem tsim cov khoom lag luam zoo ntawm koj cov lag luam {}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} ntawm steelmaking!
