1. Kunezindlela ezine zokuphamba i-BI-Pha isigabai-filange yensimbi: Manual, Mechanical, Chemical and Electrochemical. Ukumelana nokugqwala kanye nomhlobiso wei-flangeingathuthukiswa yi-polishing. I-fluid ekhona kagesi epholile yensimbi engenacala isasebenzisa i-phosphoric acid kanye ne-chromic anhydride. Esezinhlelweni zokucwaswa nokuhlanza, ezinye i-chromium ne-phosphorus zizokhishwa emanzini angcolile, zibangela ukungcoliswa kwemvelo.

2. Ifilimu yokudlula izokwakhiwa ebusweni be-Duplexi-filange yensimbi, futhi ifilimu oxide izoqala ukuncibilikisa. Ngoba ingaphezulu kwe-microscuctor ye-duplexi-filange yensimbiayihambelani, ingxenye ye-convex encane yobuso ichithiwe, kanti izinga lokuchithwa lizoba ngaphezulu kwengxenye yecala. Ukuchithwa nokwakheka kolwelwesi cishe ngasikhathi sinye, kepha izikebhe zazo zihlukile. Ngenxa yalokhu, ukuxabana kwangaphandle kwe-bi-Phambili yesigaba sensimbi Flange kuncishisiwe, okuholela endaweni ebushelelezi, ecwebezelayo.
3. Ezinye izilima ezingaphezulu ezinjengama-pores angaphezulu komhlaba kanye nemihubhe zingagcwaliswa ngokuphoqelela, ukuze kuthuthukiswe ukumelana nokungakhathali kanye nokuphikiswa okuhlobene nokubhuka. Ama-biphase ensimbi flanges anezinye iziphikisi zamandla ezimvubelo zensimbi ye-auntenitic engagqwali, futhi aneplastiki eyanele nokuqina okudingekayo kulokhu kubumba, ikakhulukazi ezindaweni zokulwa, ikakhulukazi ezindaweni ze-chloride.