Uphahla lweGalvanized lube lukhetho oluthandwayo kwimizi-mveliso yokwakha nakuphahla ngenxa yokuqina kwabo, ukumelana nokubola, kunye nokwahlukahlukeneyo. Yenziwe ngentsimbi egqunywe ngemaleko yezinc, la uphahla lwenzelwe ukumelana neemeko ezinzima zokusingqongileyo ngelixa zigcina ukuthembeka kwazo kulwakhiwo. Ukuqonda iimpawu neengenelo zophahla olukhuselekileyo kunokukunceda ukwazisa