A rayuwar yau da kullum, mutane ko da yaushe suna kiran karfe da ƙarfe tare a matsayin "karfe".Ana iya ganin karfe da ƙarfe ya kamata su zama nau'in abu;a haƙiƙa, a mahangar kimiyya, ƙarfe da baƙin ƙarfe suna da ɗan bambanci, manyan abubuwan da ke cikin su duka baƙin ƙarfe ne, amma adadin carbon ɗin da ke cikin ya bambanta.Yawancin lokaci muna kiran "irin alade" tare da abun ciki na carbon sama da 2%, da "karfe" tare da abun ciki na carbon da ke ƙasa da wannan darajar.Don haka, a cikin aikin narka baƙin ƙarfe da ƙarfe, ana fara narka tama mai ɗauke da baƙin ƙarfe a cikin narkakken ƙarfen alade a cikin tanderun fashewar wuta ( fashewar tanderu), sannan a saka taman da aka yi a cikin tanderun ƙarfe don a tace shi zuwa karfe.Sannan ana amfani da karfe (billet ko tsiri) don yin bututun ƙarfe, alal misali, ana iya yin bututun ƙarfe na carbon ƙarfe zuwa cikin bututun ƙarfe tare da fassarori masu fa'ida ta hanyar jujjuyawar zafi da sanyi mai jujjuyawa (bututun ƙarfe maras sumul).

The masana'antu tsari na sumul karfe shambura aka yafi zuwa kashi biyu manyan matakai:

1. Hot rolling (extruded sumul karfe tube): zagaye tube billet → dumama → huda → uku-roll giciye mirgina, ci gaba da mirgina ko extrusion → tsiri → girma (ko rage) → sanyaya → mikewa → na'ura mai aiki da karfin ruwa gwajin (ko gane flaw) → marking → warehousing

2. Cold zana (birgima) bututun ƙarfe maras kyau: zagaye tube blank → dumama → huda → kai → annealing → pickling → man fetur (copper plating) → Multi-pass sanyi zane (sanyi mirgina) → blank tube → zafi magani → daidaitawa → hydrostatic gwaji (gano kuskure) → alama → ajiya.
Abubuwan da ake buƙata don samar da ƙarfe da ƙarfe sun kasu kashi huɗu kuma an tattauna su daban: kashi na farko yana magana ne akan nau'o'in ma'adinan ƙarfe daban-daban;Kashi na biyu yana magana ne akan kwal da coke;Juyin (ko juyi) na slag, kamar dutsen farar ƙasa, da sauransu;Nau'in na ƙarshe shine nau'ikan kayan taimako daban-daban, irin su guntun karfe, oxygen, da sauransu.