Cov iav dub yog cov khoom lag luam tshwj xeeb iav, uas yog tus cwj pwm los thaiv feem ntau ntawm lub teeb pom, yog li cov tsos yog grey tsaus lossis tsaus. Hauv qab no yog ob peb yam ntawm cov iav dub:
Cov khoom xyaw thiab ua: Dub iav tsis yog opaque kiag li, tab sis nqus cov teeb liab (xws li cov hlau tshwj xeeb, thiab hlau oxide) rau hauv lub khob dog dig, yog li muab nws dub. Cov txheej txheem ntawm kev ua cov iav zoo li no yuav tsum tau tswj cov kev faib ua feem ntawm cov ntaub ntawv raw thiab melting tej yam kev ua kom tiav xim zoo nkauj thiab pob tshab.
Siv: Lub ntsiab siv ntawm cov iav dub muaj suav nrog Welder Mem mas, xws li lub tsheb cua (xws li lub tsheb tom qab lub tsheb), thiab qee cov twj tshwj xeeb. Nyob rau hauv kev lag luam hauv tsheb, dub yog feem ntau siv los txhim kho cov neeg caij tsheb tsis pub lwm tus paub thiab ua kom muaj kev tsis xis nyob ncaj qha.
Cov yam ntxwv: Dub iav muaj cov rwb thaiv tsev tshav kub kub thiab kev tiv thaiv ultraviolet kev ua tau zoo, yog li nws tseem siv hauv cov cuab yeej architectural. Tsis tas li ntawd, vim nws cov cim pom zoo, cov iav dub kuj tseem siv rau cov khoom siv hniav zoo nkauj thiab cov khoom sib txawv