Mhedzisiro yepickling uye passivation panguva yekugadzira, welding, kuyedza, uye kupisa kurapwa kuchaita kuti iron oxide, welding slag, girisi, uye imwe tsvina iungane pamusoro pepombi (kabhoni simbi pombi, kabhoni copper pombi, simbi isina tsvina pombi) , izvo zvinoderedza corrosion re...
Verenga zvimwe