kumbura ƙarfe shine takardar ƙarfe wacce aka tsinkaye sannan ta miƙa don ƙirƙirar lu'u-lu'u ko kyakkyawan yanayi. Mutane na iya amfani da shi ta hanyoyi da yawa
Bayanai dalla-dalla kamar yadda ke ƙasa:

Ndunƙun raɓaɓɓun sassan karfe ne, ko ɓangarorin buɗe lu'u-lu'u.

SWD, ko Short Way of Design, ita ce tazara tsakanin aya a kan jingina zuwa madaidaicin ma'ana a kan kowane ɗaurin mafi kusa a ƙanƙanin gajere na buɗewar.

LWD, ko Dogon Hanyar Zane, ita ce tazara tsakanin aya a kan jingina zuwa daidai daidai a kan kowane ɗaurin mafi kusa a kan tsayi mafi girma na buɗewa.

SWO, ko Short Way of Opening, shine nisan da aka auna daga ciki na bond zuwa ciki na kowane ɗaurin mafi kusa a ƙanƙanin gajere na buɗewar.

LWO, ko Dogon Hanyar buɗewa, shine nisan da aka auna daga ciki na bond zuwa ciki na kowane ɗaurin mafi kusa a ƙwanƙolin girman buɗewar.

Eshararen ƙarfe ɗin da aka faɗaɗa yana da ƙarfi, yana da aikace-aikace iri-iri, kuma yana da tsawon rai. Ana amfani dashi don manyan hanyoyi da kuma hanyoyin jirgin ƙasa. masana'antar gini, tsaron kasa, masana'antar samar da mai, masana'antar kiwon kifin. Aikin Noma, da kuma tsarin daukar kaya.

Karfe raga iri-iri ne a masana'antar allon karfe. Hakanan an san shi da raga na ƙarfe, raga na lu'u-lu'u, ƙarfe na ƙarfe, raga mai faɗaɗa ƙarfe, raga mai nauyi, ƙafafun kafa, raga mai farantin aluminium, baƙin ƙarfe na baƙin ƙarfe, raga ta raga, sandar eriya, raga mai tace, raga mai jiwuwa da sauransu.