Don coils na galvanized, an nutsar da ƙarfen ɗin a cikin narkakkar wanka na zinc don yin takardar tutiya mai rufi a samansa.Ana samar da shi ne ta hanyar ci gaba da aikin galvanizing, wato, farantin karfe na birgima yana ci gaba da nutsewa a cikin tanki mai plating tare da narke zinc don yin farantin karfe mai galvanized;alloyed galvanized karfe farantin karfe.Irin wannan farantin karfe kuma ana kera shi ta hanyar tsomawa mai zafi, amma nan da nan bayan an fita daga cikin tanki, sai a yi zafi da shi zuwa kusan 500 ℃ don samar da alloy na zinc da ƙarfe.