Icyuma cya karubone ni ubwoko bwicyuma gito cya karubone, kiroroshye cyane, cyoroshye gutunganya, icyuma cya A36 cyubatswe nicyuma cyerekana imbaraga, kiramba cyane, kandi igiciro kirahendutse cyane nibicuruzwa bikoreshwa cyane bishyushye cyane. mu nganda zubaka.ASTM A36 ibicuruzwa byanyuma bifite ubuso butoroshye kandi byoroshye kumashini.kugirango birusheho gutunganywa.