1. Ukukhutshwa kwe-rust ebusweni bombhobho wensimbi kufuneka kufikelele kumgangatho we-sa2.5 we-gb8923-88, ebonisa umbala wendalo wentsimbi, ngaphandle kwegrisi ebonakalayo, ukungcola, ukugqwala kunye nezinye iziqhotyoshelo. 2. I-anti-corrosion layer kufuneka iphiliswe kwiiyure ezingama-24, kunye nobukhulu obufanayo, ukuqina, n ...
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