Ngā Pūrongo Kamupene

tokotoko kowhai kowiri tira: te kōwhiringa tino pai mō te pakari me te whānui** i roto i ngā ahumahi hanga me te hanga tere o ēnei rā, kei te tino teitei te tono mō ngā rauemi kounga teitei. i roto i ēnei rauemi, ko te **kowhai kowiri tira...

Ko te ngongo whakakoi he ngongo maitai CDS (Cold drawn seamless) he ngongo maitai DOM (Drawn Over Mandrel) rānei, he diameter o roto kua whakakoitia, kua werohia rānei, ā, kua whakakanapahia ki te roera, nō reira, he tino tika ngā ine ID o ngā ngongo whakakoi, ā, he maeneene te mata ID. He whānui ngā ngongo whakakoi...

Mō te hanga ngongo, e rua ngā tikanga e whakamahia whānuitia ana, ko te tātai makariri me te whakakoi. E whakamahia ana ngā tukanga e rua hei hanga ngongo kounga teitei me ngā āhuatanga motuhake, engari he rerekē ngā tikanga me ngā āhuatanga o ngā ngongo. Mā te mārama ki te rerekētanga i waenga i ngā ngongo tātai makariri me ngā ngongo whakakoi ka āwhina i te whiriwhiri i te momo ngongo tika mō tētahi tono motuhake.

Ko te ngongo whakakoi rango waipēhi (e mōhiotia ana ko te ringaringa whakakoi rango, te ringaringa whakakoi rango waipēhi, me ētahi atu) he wāhanga nui o te pūnaha waipēhi, e whakamahia ana hei hono i te piston me te rango o te rango waipēhi, ā, he mahi hiri me te ārahi.

He mea nui te mahi a ngā ngongo whakakoi i roto i te mahi a ngā rango waipēhi, e whakamahia whānuitia ana i roto i ngā mahi ahumahi me ngā mahi arumoni. Ko te ngongo whakakoi, e mōhiotia ana ko te ngongo rango waipēhi, ko te ngongo kumea matao rānei, he ngongo maitai kore hononga kua tukatukahia mā te tukanga whakakoi hei whakapai ake i tōna āhua mata me te tika o ngā āhuatanga. Ko te tukanga whakakoi e uru ana ki te whakamahinga o ngā kōhatu whakakoi hei tango i ngā hapa me te hanga i tētahi mata maeneene, orohia i te diameter o roto o te ngongo.