Kub dov ca steel yog ib tug ntev, muaj peev xwm dov hlau nrog ib tug duab plaub cross-section rau dav siv.Nws cov lus qhia tshwj xeeb tau qhia hauv millimeters ntawm thickness * dav, thiab cov hlau tiaj tus tuaj yeem ua tiav cov hlau, siv rau cov khoom siv, ntaiv, txuas hniav thiab laj kab.