Hei paipa kawe waka nui, he whānuitia te whakamahinga o ngā paipa rino kore hononga i roto i te hinu, te hau māori, te ahumahi matū, te hiko me ētahi atu ahumahi. I te wā e whakamahia ana, me tino whakamātautau kia pai ai te kounga me te haumaru o te paipa. Ka whakaatuhia i roto i tēnei tuhinga te whakamātautau paipa rino kore hononga mai i ngā āhuatanga e rua: ngā tūemi whakamātautau me ngā tikanga.

Ko ngā tūemi whakamātautau ko te āhua, te rahi, te kounga o te mata, te hanganga matū, te kume, te pānga, te papatahi, te mura, te piko, te pēhanga waipēhi, te paparanga piauau, me ētahi atu.
Tikanga kimi
1. Whakamātautau kume
2. Whakamātautau pānga
3. Whakamātautau whakapapatahi
4. Whakamātautau whakawhānui
5. Whakamātautau piko
6. Whakamātautau waipēhi
7. Tirotiro paparanga piauau
8. Ko te kounga o te mata e hiahiatia ana kia kaua e kitea he kapiti, he kopa, he koha, he motu me he pakaru i ngā mata o roto, o waho hoki o te paipa rino.
Hei tāpiritanga, ka whakahaerehia ngā tirotiro i runga anō i ngā hiahia o te kiritaki, pērā i teGB/T 5310-2017ngā paipa maitai tuitui mōngā kohua pēhanga teitei.
Te hanganga matū: Ko te nuinga o ngā huānga o te maitai he chromium, molybdenum, cobalt, titanium, me te konumohe, ka taea e ēnei te whakapai ake i te ātete wera me te ātete waikura o te maitai.
Ngā āhuatanga hangarau: Kaha hua ≥ 415MPa, kaha kume ≥ 520MPa, roanga ≥ 20%.
Tirotiro āhua: Kāore he hapa kitea, he kita, he kopa, he kapiti, he karawarawa, he hapa kounga rānei i runga i te mata.
Whakamātautau kore-whakangaro: Whakamahia ngā tikanga ultrasonic, hihi me ētahi atu tikanga hei whakamātautau i ngā paipa rino kia kore ai he koha o roto o ngā paipa rino tuitui.