Ama-flange ensimbi engagqwali (i-flange) abizwa nangokuthi ama-flange ensimbi engagqwali noma ama-flange. Kuyingxenye lapho ipayipi nepayipi kuxhunywe komunye nomunye. Ixhunywe ekugcineni kwepayipi. I-flange yensimbi engagqwali inezimbobo futhi ingabotshwa ukuze ama-flange amabili ensimbi engagqwali axhumeke ngokuqinile. I-flange yensimbi engagqwali ivalwe nge-gasket. Ama-flange ensimbi engagqwali ayizingxenye ezimise okwe-disc ezivame kakhulu kumapayipi kanye nama-flanges asetshenziswa ngababili. Emapayipini, ama-flange asetshenziselwa ngokuyinhloko ukuxhuma amapayipi. Emapayipini adinga ukuxhunywa, ama-flange ahlukahlukene afakiwe, futhi amapayipi aphansi okucindezela angasebenzisa ama-flange ahlanganiswe ngocingo, futhi ama-welding flanges asetshenziselwa izingcindezi ezingaphezu kuka-4 kg.

Ukumelana nokugqwala kwama-flange ensimbi engagqwali kuncike ku-chromium, kodwa ngenxa yokuthi i-chromium ingenye yezingxenye zensimbi, izindlela zokuvikela zihlukile. Uma inani le-chromium elingeziwe lingaphezu kuka-11.7%, ukumelana nokugqwala komkhathi wensimbi kukhuphuka ngokuphawulekayo, kodwa lapho okuqukethwe kwe-chromium kuphezulu, nakuba ukumelana nokugqwala kusathuthukisiwe, akubonakali. Isizathu siwukuthi lapho i-chromium isetshenziselwa ukwenza insimbi ye-alloy, uhlobo lwe-oxide engaphezulu luyashintshwa lube i-oxide engaphezulu efana naleyo eyakhiwe ngensimbi ehlanzekile ye-chromium. Le oxide enamathela ngokuqinile ecebile nge-chromium ivikela ingaphezulu ekuqhubekeleni phambili kwe-oxidation. Lolu ngqimba lwe-oxide luncane kakhulu, okwazi ngalo ukubona ukucwebezela kwemvelo kwendawo yensimbi, okunikeza insimbi engagqwali indawo eyingqayizivele. Ngaphezu kwalokho, uma ungqimba lwangaphezulu lonakalisiwe, indawo yensimbi eveziwe isabela nomkhathi ukuze izilungise, iguqule i-oxide "passivation film" futhi iqhubeke nokuvikela. Ngakho-ke, zonke izakhi zensimbi ezingenasici zinesici esivamile, okungukuthi, okuqukethwe kwe-chromium kungaphezu kuka-10.5%.

I-stainless steel flange uxhumano kulula ukuyisebenzisa futhi ingamelana nezingcindezi ezinkulu. Ukuxhumana kwe-flange yensimbi engenasici kusetshenziswa kakhulu kumapayipi ezimboni. Ekhaya, ububanzi bepayipi buncane futhi buphansi, futhi ukuxhumeka kwe-stainless steel flange akubonakali. Uma usendlini yokubhayela noma indawo yokukhiqiza, amapayipi nemishini yensimbi engagqwali yonke indawo.