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Umuringa w'icyuma wa Carbon C/U ugurishwa cyane
Icyuma gishyushye gikozwe mu cyuma gishyushyeishobora kugabanywamo icyuma gishyushye gikozwe mu cyuma cya galvanize n'icyuma gishyushye gikozwe mu cyuma cya galvanize hakurikijwe uburyo butandukanye bwo gukaraba. Ibice by'icyuma byakuwemo ingese byinjizwa mu mazi ya zinc yashongeshejwe ku bushyuhe bwa 440 ~ 460°C kugira ngo icyuma gikoreshwe. Urupapuro rwa zinc rufatanye n'ubuso bw'igice kugira ngo hirindwe ingese.

