Galvanized bututu ya ƙunshi da farko na tushe karfe da tutiya shafi. Ƙarfe na tushe yawanci karfe ne, wanda ke ba da kyakkyawan ƙarfi da ductility. Tushen zinc shine Layer ko yadudduka na zinc{2}} ƙarfe na ƙarfe wanda aka ajiye akan saman ƙasan ƙarfe ta hanyar hanyar lantarki ko zafi{3}} tsoma sutura. Wannan gami ba kawai aesthetically m amma, mafi mahimmanci, yana ba da kyakkyawan juriya na lalata, yana haɓaka rayuwar sabis na bututun ƙarfe.
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