paipa hau kirihou hoatu neke atu i te 20 tau profection

Kei roto i te ngongo hau he hononga paipa, he mea hanga he putorino me te karekau rino kua mau ki tetahi pito o te tinana paipa, ka whakawhiwhia te tinana paipa ki te hau, ka hangaia tetahi pito ki te riu hononga annular mo te ngongo. Ko te whakaurunga, ko te hohonu o te axial o te riu hononga annular he nui ake i te roa o te karekau rino, a ko tetahi waahanga o te mata o roto o te riu hononga annular he mata conical, Ko te pito o roto o te mata conical ka hangaia me tetahi taahiraa e tata ana. ki tetahi atu wahi o te mata o roto o te riu hononga annular. Ka karohia e te hanganga te ahuatanga o te wa e rite ana te hononga o te putorino ki te ngongo, ka hohonu rawa te whakauru o te ngongo ki roto i te hononga paipa, ka puta he rerekee i te pito o te hononga paipa, he pai ki te hau maeneene me te haumaru teitei. Ko te hononga i waenga i te mata o waho me te mata o roto o te riu hononga annular ka tango i te whakawhiti porohita porohita hei aukati i te kukū o te ahotea. Ko te tauira whaipainga e pa ana ki tetahi putorino ngawari mo te kawe i te hau maori, te waro ki te hau, te hau hinu hinu liquefied ranei, e tango ana i te paipa hanga papa-rua hei matrix, ka hipokina te mata o te matrix ki te paparanga mata maeneene, me te mata hono. i waenganui i ia paparanga o te ngongo ka hangaia ki te hangahanga tauutuutu convex concave. He maeneene te mata o te ngongo, he ngawari ki te horoi, he ngawari te tinana paipa; Ka pai ake te kaha o te ngongo ngongo, ka roa te ora o te ratonga, ka pai ake te kounga o te hua, ka roa te koroheketanga me te aukati i te paheketanga.