Ibyuma bikoreshwa mugukora ibikoresho bitandukanye byo gukata, ubukonje nubushyuhe bishyushye bipfa, ibikoresho byo gupima nibindi bikoresho hamwe hamwe byitwa ibyuma.
Ibikoresho: 6Cr4W3MoVNb, 6W6Mo5Cr4V, 7Cr7Mo3V2Si, Cr4W2MoV, Cr5Mo1V, Cr6WV, Cr12, Cr12MoV, Cr12W, Cr12Mo1V1.
Diameter: 12mm-650mm.
Ubuso: Isuku / Umukara Rough / Urusyo / Gusya Irangi n'ibindi.
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