Kub- dov kauj yog cov khoom siv hlau uas ua los ntawm cov cua sov steel hlau mus rau qhov kub thiab txias thiab tom qab dov lawv. Nws cov khoom tseem ceeb muaj xws li carbon structural steel thiab qis- alloy steel; Nws yog tus cwj pwm los ntawm lub zog siab, zoo heev toughness, thiab superior ua khoom.
Hauv kev tsim kho, cov khoom no yog siv rau hauv kev thauj khoom -cov kabmob xws li steel ncej thiab choj ncej. Hauv kev tsim tsheb, nws yog siv rau cov khoom siv - xws li chassis thiab lub cev ua haujlwm - kom yooj yim rau lub teeb yuag. Tsis tas li ntawd, nws ua lub luag haujlwm tseem ceeb hauv ntau yam kev lag luam, suav nrog kev tsim khoom siv tshuab, kev tsim nkoj, lub zog kav dej, thiab kev tsim khoom siv hauv tsev. Tsav los ntawm kev txhim kho thev naus laus zis, nws cov peev txheej ntawm daim ntawv thov tam sim no nthuav dav mus rau thaj chaw tshiab, xws li kev tsim khoom siv hluav taws xob tsim hluav taws xob.