Ibipimo byibanze byibirundo

Urupapuro rushyushye rufite ibirungo ahanini bifite imiterere itatu:Impapuro za u-shusho, A-shyed pagena steel yicyuma. Reba Ishusho ya 1 kubisobanuro birambuye. Muri bo, urupapuro rw'ibyuma rwa Z-rusa n'ibirungo by'icyuma bihenze kubera umusaruro wabo kitoroshye, gutunganya no kwishyiriraho. Ni 1/3 hejuru ya u-shusho yicyuma. Ubu bikoreshwa cyane cyane muburayi na Amerika. Ibirungo bya U-shusho bikoreshwa cyane muri Aziya, harimo n'Ubushinwa.