Bakin karfe flanges (flange) kuma ana kiranta bakin karfe flanges ko flanges.Wani bangare ne da ake hada bututu da bututun juna.An haɗa zuwa ƙarshen bututu.Bakin karfe flange yana da perforations kuma ana iya kulle shi ta yadda flanges bakin karfe biyu suna da alaƙa tam.An rufe bakin karfe flange da gasket.Flanges na bakin ƙarfe sassa ne masu sifar diski waɗanda suka fi yawa a cikin aikin famfo kuma ana amfani da flanges bibiyu.A cikin aikin famfo, ana amfani da flange da farko don haɗin bututu.A cikin bututun da ake buƙatar haɗawa, ana shigar da nau'ikan flange iri-iri, kuma ƙananan bututun na iya amfani da flanges masu haɗa waya, kuma ana amfani da flanges ɗin walda a matsin lamba sama da 4 kg.

Juriya na lalata flanges bakin karfe ya dogara da chromium, amma saboda chromium daya ne daga cikin abubuwan da ke cikin karfe, hanyoyin kariya sun bambanta.Lokacin da adadin chromium da aka ƙara ya wuce 11.7%, juriya na lalata ƙarfe na yanayi yana ƙaruwa sosai, amma lokacin da abun ciki na chromium ya fi girma, kodayake juriya na lalata har yanzu yana inganta, ba a bayyane yake ba.Dalili kuwa shi ne, idan aka yi amfani da chromium wajen hada karfe, ana canza nau’in oxide na sama zuwa wani oxide mai kama da wanda aka samu akan karfen chromium zalla.Wannan oxide mai arzikin chromium mai mannewa tam yana kare farfajiya daga ƙarin iskar shaka.Wannan Layer Oxide yana da siriri matuƙa, ta inda za ku iya ganin ƙyalli na zahiri na saman ƙarfe, yana ba wa bakin karfe wani wuri na musamman.Bugu da ƙari, idan Layer Layer ya lalace, fuskar ƙarfe da aka fallasa yana amsawa tare da yanayin don gyara kansa, sake fasalin "fim ɗin wucewa" oxide kuma yana ci gaba da karewa.Sabili da haka, duk abubuwan baƙin ƙarfe suna da halayen gama gari, wato, abun ciki na chromium yana sama da 10.5%.

Haɗin flange na bakin karfe yana da sauƙin amfani kuma yana iya jure babban matsin lamba.Bakin karfe flange haɗin ana amfani da yawa a cikin bututun masana'antu.A cikin gida, diamita na bututu ƙanana ne da ƙananan matsa lamba, kuma ba a iya ganin haɗin haɗin flange na bakin karfe.Idan kun kasance a cikin ɗakin tukunyar jirgi ko wurin samarwa, bututu da kayan aiki na bakin karfe suna ko'ina.