Bakin karfe taga allo kuma ana kiranta bakin karfe kwari allo, tsaro taga allo. An yi shi da ƙyalli mai ƙyalli na ƙarfe tare da dorewa da aiki na dindindin. Gilashin waya na bakin karfe na iya tsayayya da lalata, tsatsa, zafi, alkaline, don haka ana iya amfani da shi a cikin mawuyacin yanayi don windows, ƙofofi da allon baranda don hana kwari.