Aaikace-aikace:
Ana amfani da bututun ƙarfe marasa ƙarfi da aka yi da irin wannan nau'in ƙarfe a cikin kayan aikin ruwa mai ƙarfi, manyan silinda mai ɗaukar nauyi, tukunyar jirgi mai ƙarfi, kayan aikin taki, fashewar mai, hannun rigar axle na mota, injin dizal, kayan aikin ruwa, da sauran bututu.