Inkcazo Umbhobho wentsimbi (umbhobho owenziwe ngentsimbi) unombhobho onqamlezayo ode kakhulu kunobubanzi okanye umjikelezo wentsimbi.Ngokwemilo ye-cross-sectional shape, ihlulwe kwiibhobho zetsimbi ezijikelezayo, ezikwere, ezixande kunye nezikhethekileyo;ngokwezinto eziphathekayo, yahlulwe kwimibhobho yensimbi ye-carbon, imibhobho yensimbi ye-alloy ephantsi, imibhobho yensimbi yealloy kunye nemibhobho yensimbi edibeneyo;Imibhobho yentsimbi yezixhobo ezishushu, ishishini lepetrochemical, imveliso yoomatshini...