Ko te nuinga o te whakamahinga o ngā paipa maitai koranu i roto i ngā tipu hiko, te mana karihi, te pōro pēhanga teitei, te whakamahana pāmahana teitei me te whakamahana anō me ētahi atu paipa me ngā taputapu pēhanga teitei me te pāmahana teitei. He mea hanga ki te maitai waro kounga teitei, te maitai hanganga koranu me te maitai ātete wera kowiri tira, mā te huri wera (tangohanga, whakawhānui) te huri matao rānei (tōia).

Ko te painga nui o te paipa maitai koranu ko tōna taea te hangarua 100%, he mea e hangai ana ki te rautaki ā-motu mō te tiaki taiao, te penapena pūngao me te penapena rauemi. Ka akiaki te kaupapa here ā-motu i te whakawhānui ake i te mara tono o te paipa koranu pēhanga teitei. I tēnei wā, ko te haurua anake o te katoa o te whakamahinga maitai i ngā whenua whakawhanake te kai o ngā ngongo koranu. Mā te whakawhānui ake i te mara whakamahi ngongo koranu ka nui ake te wāhi mō te whanaketanga o te umanga. E ai ki ngā rangahau a te rōpū tohunga o te Peka Paipa koranu o te Rōpū Maitai Motuhake o Haina, ka piki ake te hiahia mō te paipa koranu pēhanga teitei i Haina mā te 10-12% ia tau i te heke mai. Ko te paipa koranu he paipa maitai e ai ki te hanga rauemi (arā, rauemi) hei tautuhi, e ai ki te ingoa ko te paipa koranu; ā, ko te paipa tuitui he paipa maitai e ai ki te tukanga whakaputa (tuitui tuitui) hei tautuhi, he rerekē mai i te paipa tuitui he paipa tuitui, tae atu ki te paipa whakarewa tuitui tika me te paipa porowhita.

Ko te rauemi o te ngongo koranu he penei pea:

16-50Mn, 27SiMn, 40Cr, 12-42CrMo, 16Mn, 12Cr1MoV, T91, 27SiMn, 30CrMo, 15CrMo, 20G, Cr9Mo, 10CrMo910, 15Mo3, 15CrMoV, 35CrMoV, 45CrMo, 15CrMoG, 12CrMoV, 45Cr, 50Cr, 45CrNiMo, me ētahi atu.