Ukuba khona kwe-zinc layer kulethe ubunzima obuthile ekushiseleleni insimbi.Izinkinga eziyinhloko yilezi: ukuzwela okwenyuka kokuqhekeka kwe-welding kanye nama-pores, ukuhwamuka kwe-zinc kanye nentuthu, ukufakwa kwe-oxide slag, nokuncibilika nokulimala kwe-zinc coating.Phakathi kwabo, i-welding crack, umoya ...
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