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