
Ko te matotoru o te kiriata konutea passivation tae ko 8-15μm, ko te whakamatautau rehu tote he nui atu i te 72 haora, a ko te ahua he kopere-tae. I te wa e whakamahia ana te paahitanga chromium trivalent, he pai te mahi tiaki taiao.
Ko te mahunga he hoahoa countersunk whiti, ka taea te huna ki roto i te mata whakauru kia mau tonu te mata. Ko te diameter moka drill he rite ki te diameter miro (pērā i te ST4.2 drill bit diameter 4.2mm), e ū ana ki te paerewa GB/T 15856.1-2002.
Ko ta taatau kamupene te nuinga o te whakaputa me te hoko atu i nga momo raka hiko, poroporo, taputapu photovoltaic, hanganga maitai nga waahanga whakauru, aha atu.