Galvanized karfe tube ne sanyi-birgima ko zafi-birgima , dogon kuma kunkuntar tube na karfe a sãɓãwar launukansa digiri na rufi da wani Layer da ake kira (zinc, aluminum) albarkatun kasa.Hot-tsoma galvanizing yana da abũbuwan amfãni daga uniform shafi, karfi mannewa da kuma dogon sabis rayuwa.