Umuyoboro
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Ubukonje bwakozwe ASTM a36 ibyuma bya U U ibyuma
U-igice cyicyuma ni ubwoko bwibyuma bifite igice cyambukiranya inyuguti yicyongereza “U”.Ibintu nyamukuru biranga ni umuvuduko mwinshi, igihe kirekire cyo gushyigikirwa, kwishyiriraho byoroshye no guhindura ibintu byoroshye.Ikoreshwa cyane cyane mumuhanda wamabuye, inkunga ya kabiri yumuhanda wanjye, no gushyigikira umuyoboro unyuze mumisozi.