cathode jan karfe wani nau'in karfe ne wanda ba na karfe ba wanda ke da alaka da dan adam.An yi amfani da shi sosai a cikin wutar lantarki, masana'antar haske, masana'antar kera, masana'antar gini, masana'antar tsaron ƙasa da sauran fannoni.An yi amfani da shi don jure juriya na igiyoyi daban-daban, wayoyi, injina, masu canza wuta, masu sauyawa, allunan kewaye da bugu.Samar da bawuloli na masana'antu da na'urorin haɗi, kayan aiki, ɗigon zamewa, gyare-gyare, masu musayar zafi da famfo. Har ila yau, yana yin vacuum, distillation tank, tank tank da sauransu. Har ila yau, ana amfani da shi a cikin masana'antun tsaro don yin harsasai, harsashi, sassan bindigogi, da dai sauransu.