Khoom siv: carbon steel
Qauv: GB / YB
Kev kho deg: galvanized / ntoo xim
Kev Siv: Hauv kev lag luam rooj tog tsim khoom, nws yog siv rau rooj zaum, rooj zaum, rooj zaum fabrics thiab tawv; nyob rau hauv kev lag luam kho kom zoo nkauj, nws yog siv rau ceilings thiab nyias daim hlau; nyob rau hauv lub thawv ntoo kev lag luam, nws yog siv rau txheej nyias daim hlau.
