Manyan maki takwas na karfe sun hada da:
Hot birgima nada: wani karfe farantin da high-zazzabi zafi mirgina aiki, tare da tsatsa a saman da matalauta inji Properties, amma tare da ƙananan aiki da kuma tsada.
Cold birgima nada: Karfe farantin sarrafa ta sanyi mirgina tsari, tare da santsi surface, high inji ƙarfi da kuma roba.
Matsakaici mai kauri: farantin karfe da ke tsakanin faranti mai sanyi da mai zafi, mai kauri daga 3 zuwa 60mm.Yana da aikace-aikace iri-iri kuma ana iya amfani dashi don kera sassa daban-daban na inji da abubuwan haɗin gwiwa.
Tatsi karfe: ciki har da zafi-birgima tsiri karfe, sanyi-birgima tsiri karfe, galvanized tsiri karfe, da dai sauransu.
Rufi: ciki har da galvanized sheet coils, launi mai rufi sheet coils, tin plated takardar coils, aluminum plated takardar coils, da dai sauransu.
Bayanan martaba: ciki har da I-beams, karfen kusurwa, karfen tashar, H-beams, C-beams, Z-beams, da dai sauransu.
Kayan gini: ciki har da bakin karfe, babban waya, waya na yau da kullun, karfe zagaye, dunƙule, da dai sauransu.
Kayayyakin bututu: gami da bututu marasa ƙarfi, bututun welded, bututun galvanized, bututun karkace, bututun tsari, bututu madaidaiciya, da sauransu.
Ana amfani da waɗannan nau'ikan ƙarfe da yawa a cikin injuna daban-daban, gine-gine, da sassa na tsari dangane da amfani da hanyoyin sarrafa su daban-daban.
Lokacin aikawa: Maris-05-2024