Ukumelana nokugqwala kwepayipi leshawa lensimbi engagqwali kuhlobene eduze nokuqukethwe kwe-chromium ezintweni zayo. Uma inani lesengezo se-chromium lingu-10.5%, ukumelana nokugqwala kwensimbi engagqwali kuzokhula kakhulu, kodwa okuqukethwe kwe-chromium okwengeziwe akungcono, ngisho Okuqukethwe kwe-chromium ezintweni zensimbi engagqwali kuphezulu kakhulu, kodwa ukusebenza kokumelana nokugqwala ngeke kuthuthukiswe. .
Uma kufakwa insimbi engagqwali nge-chromium, uhlobo lwe-oxide engaphezulu luvame ukuguqulwa lube i-oxide engaphezulu efana naleyo eyakhiwe insimbi emsulwa ye-chromium, futhi le chromium oxide emsulwa ingavikela ingaphezulu lensimbi engagqwali. Qinisa umphumela wayo we-anti-oxidation, kodwa lolu ungqimba lwe-oxide luncane kakhulu futhi ngeke luthinte ukucwebezela kwendawo yensimbi engagqwali. Kodwa-ke, uma lesi sendlalelo esivikelayo sonakalisiwe, indawo yensimbi engagqwali izosabela nomkhathi ukuze izilungise futhi iphinde yakheke futhi Ifilimu ye-Passivation ivikela ingaphezulu lensimbi engagqwali.
Uma sithenga insimbi engagqwaliamapayipi okugeza, singasebenzisa lawo mapayipi angaphezulu kwawo afakwe nge-chrome. Ukusebenza kwe-anti-rust kanye ne-anti-corrosion yalolu hlobo lwepayipi kuphakeme kakhulu kunamapayipi angazange afakwe nge-chrome. Ngesikhathi sokusetshenziswa okuvamile, udinga futhi ukunaka ukuze ugweme ukufafaza isisombululo se-asidi ku-hose ngangokunokwenzeka.