Bututun walda na bakin karfe galibi ana amfani da su ne a fannin gine-gine na birane da injiniyan ado; a fannin masana'antu masu sauƙi, magunguna, yin takarda, tsaftace najasa, samar da ruwa, injina, da sauransu, akwai kuma adadi mai yawa; a fannin sinadarai, taki, sinadarai na petrochemical da sauran masana'antu, ƙayyadaddun bayanai gabaɗaya shine Φ159mm. Bututun da ke ɗauke da matsakaicin matsin lamba da ke sama; na'urar rage matsin lamba ta mota kuma tana amfani da bututun walda na bakin karfe.

Ana amfani da bututun ƙarfe marasa sulke a cikin "masana'antu uku" (sunadarai, taki, zare na sinadarai), man fetur, tukunyar wutar lantarki, injina, sararin samaniya, masana'antar nukiliya, masana'antar tsaron ƙasa da sauran fannoni.