Hlau logyog ib hom ntawm lub log ua los ntawm hlau thiab hlau, thiab nws kuj yog cov khoom siv tsheb siv thaum ntxov, uas muaj cov yam ntxwv ntawm tus nqi qis, siab zog, zoo hnav tsis kam thiab kev siv tshuab yooj yim, nws tseem siv dav hauv txhua yam ntawm cov tsheb niaj hnub qis thiab cov tsheb thauj khoom. Nws qhov tsis zoo tseem ceeb yog qhov ua tau zoo thiab tsis zoo nkauj. Qhov kev xaiv tseem ceeb ntawm cov ntaub ntawv steel log yog carbon steel, ductile hlau, lwm yam ntaub ntawv steel. Feem ntau ntawm cov pa roj carbon steel log yog siv nyob rau hauv dav dav lub zog kev ua tau zoo tsheb, nws tsis muaj zog, tsis muaj zog tiv thaiv rau sab nraud quab yuam, nres thaum tshav kub kub kev ua tau zoo ntawm lub tsheb kub dissipation kev ua tau zoo yog txwv, nws yog ib qho nyuaj rau txheej txheem zoo nkauj qauv ntawm cov pa roj carbon steel, tab sis nws cov nqi yog pheej yig dua, thiab nws yog thawj xaiv rau ntau yam tsawg kawg nkaus tsheb log cov ntaub ntawv. Ductile Iron Wheel muaj cov khoom siv zoo dua li cov roj carbon steel log, tab sis nws yog qhov nyuaj rau kev tswj cov duab zoo dua li cov pa roj carbon steel log thaum ua haujlwm, yog li cov nqi ua haujlwm siab dua thiab kev lag luam tsis zoo. Nyob rau hauv xyoo tas los no, lwm cov ntaub ntawv hlau xws li qee cov hlau alloy steels tau siv ntau thiab ntau dua li cov khoom siv log tsheb, nws muaj qhov zoo ntawm lub zog ntau dua, sib dua qhov hnyav, zoo dua cov cua sov dissipation, kev ua tau zoo thiab molding kev ua tau zoo, yooj yim rau vuam thiab lwm yam, thiab tau txais kev pom zoo los ntawm feem ntau ntawm cov khoom siv tsheb.