Ko te mata tātari poro kowiri tira ko te ahua o te huānga hanganga mata whakarewa e whakamahia ana mo te tirotiro me te tātari. He kaha te kaha, he pakari me te kaha ki te kawe, ka taea te hanga ki nga momo ahua o te tirotiro maataki me te taputapu tātari.

Te waahanga tono: he nui te whakamahi i te hinu, te matū, te rongoa, te maimoatanga wai, te tiaki i te taiao, te kai, te ahumahi marama me te ahumahi pepa.

 āhuatanga hua:

1. Karekau he arai, ko te pae mata ahua-V ka hanga i te aputa poro, kaore he aukati.

2. High pū tuitui mata, fehokotaki'anga aunoa tika tui mata.

3. He ngawari ki te horoi, ka taea te tango i te mata ma te puhipuhi ki muri.

4. Te mate pehanga iti me te mahi miihini teitei.

5. Te ora roa me te utu tiaki iti.

Rauemi: 304304L, 321316l, 2205904l, Hastelloy, etc.

Ko te mata o te kowiri tira ka hangaia ki te 304, 304L, 316, 316L, 310, 310S me etahi atu waea whakarewa, he maeneene te mata, kahore he waikura, he kore-paitini, he maaku me te tiaki taiao. Whakamahinga: hōhipera, rimurapa, rorerore mīti, kete puawai ora, raupapa kete hua kei te nuinga o te hanga o te mata waea kowiri tira, maimoatanga mata i te hangarau electropolishing, he kanapa te mata ano he whakaata.

He kowiri tira te wera, te waikawa, te kakahu. Na enei ahuatanga, ka whakamahia te mata kowiri tira i roto i te maina, te matū, te kai, te hinu, te rongoa me etahi atu ahumahi, ko te nuinga mo te hau, te filtration wai me etahi atu waahanga korero.