Kua roa ngā tikanga hanga paipa maitai hiko ātete-whakapiri (ERW) me te tikanga hanga paipa maitai kore-whakapiri (SMLS); i roto i te wā, kua whanake haere ngā tikanga i whakamahia hei hanga i ia mea. Nō reira, ko tēhea te mea pai ake?
1. Te hanga paipa whakarewa
Ka tīmata te paipa whakarewa hei rīpene maitai roa, he mea takai, e kiia nei ko te skelp. Ka tapahia te skelp ki te roa e hiahiatia ana, ka puta he pepa tapawhā papatahi. Ko te whānui o ngā pito poto o taua pepa ka noho hei porowhita o waho o te paipa, he uara ka taea te whakamahi hei tatau i tōna diameter o waho.
Ka whāngaihia ngā rau tapawhā rite mā roto i tētahi mīhini hurihuri e whakapiko ana i ngā taha roa ki runga tetahi ki tetahi, ka hanga he rango. I roto i te tukanga ERW, ka tukuna te iahiko auau teitei i waenganui i ngā taha, ka rewa, ka hanumi ngātahi.
Ko tētahi painga o ngā paipa ERW ko te kore e whakamahia he konganuku hanumi, ā, e kore e kitea, e pāngia rānei te hononga whakarewa. He rerekē tēnei ki te whakarewa āwhata rua-uru (DSAW), e waiho ana he poroporo whakarewa mārama me whakakore atu i runga i te whakamahinga.
Kua pai ake ngā tikanga hanga paipa whakarewa i ngā tau kua pahure. Ko te whanaketanga nui pea ko te huri ki ngā iahiko hiko auau-teitei mō te whakarewa. I mua i te tekau tau atu i 1970, i whakamahia te iahiko auau-iti. Ko ngā hononga whakarewa i hangaia mai i te ERW auau-iti he ngāwari ake ki te waikura me te pakaru o te hononga.
Ko te nuinga o ngā momo paipa whakarewa me whakamahana i muri i te hanga.
2. Te hanga paipa tuitui
Ka tīmata te hanga paipa maeneene hei poraka maitai porotaka totoka e kiia nei ko te billet. I a ia e wera tonu ana, ka werohia ngā billet mā waenganui ki te mandrel. Ko te mahi e whai ake nei ko te hurihuri me te totoro i te billet tuwhera. Ka hurihia te billet me te totoro kia tutuki ra ano te roa, te whānui me te matotoru o te pakitara e ai ki te ota a te kiritaki.
Ka whakapakeketia ētahi momo paipa tuimotu i te wā e hangaia ana, nō reira kāore e hiahiatia he maimoatanga wera i muri i te hanganga. Ko ētahi e hiahiatia ana he maimoatanga wera. Tirohia te whakatakotoranga o te momo paipa tuimotu e whakaarohia ana e koe kia mōhio ai mēnā ka hiahiatia he maimoatanga wera.
3. Ngā tirohanga hītori me ngā whakamahinga mō ngā paipa maitai whakarewa, me ngā paipa maitai kore hononga
Ko ngā paipa rino ERW me te tui kore hononga kei te whakamahia i ēnei rā hei huarahi kē atu nā runga i ngā tirohanga tawhito.
I te nuinga o te wā, i kiia he ngoikore ake ngā paipa whakarewa nā te mea he hononga whakarewa kei roto. Kāore i kitea tēnei hapa hanganga i roto i ngā paipa tuitui, ā, i kiia he haumaru ake. Ahakoa he pono kei roto i ngā paipa whakarewa he hononga e ngoikore ai i te ariā, kua pai ake ngā tikanga hanga me ngā tikanga whakapūmau kounga kia rite ki te hiahia o te paipa whakarewa ina kore e hipa i ōna taunga. Ahakoa he mārama te painga e kitea ana, ko te arotake mō ngā paipa tuitui ko te tukanga hurihuri me te totoro ka puta he matotoru pakitara kāore i te ōrite ki te matotoru tika ake o ngā rau maitai e whakamahia ana mō te whakarewa.
Ko ngā paerewa ahumahi e whakahaere ana i te hanga me te whakatakotoranga o te ERW me te paipa maitai kore hononga e whakaata tonu ana i aua tirohanga. Hei tauira, e hiahiatia ana ngā paipa kore hononga mō ngā tono pēhanga teitei, pāmahana teitei i roto i te hinu me te hau, te whakaputa hiko me te rongoā. Ko ngā paipa whakarewa (he iti ake te utu ki te whakaputa, ā, he whānui ake te wātea) ka tohua puta noa i ngā ahumahi katoa mena kāore te pāmahana, te pēhanga me ētahi atu taurangi ratonga e neke ake i ngā tawhā kua tohua i roto i te paerewa e tika ana.
I roto i ngā mahi hanganga, kāore he rerekētanga o te mahi i waenga i te paipa rino ERW me te paipa maitai kore hononga. Ahakoa ka taea te tohu i ngā mea e rua hei whakawhitiwhiti, kāore e tika kia tohua he paipa kore hononga ina he rite tonu te pai o te paipa whakarewa iti ake te utu.
4. Whakaaturia mai ō whakaritenga, tonoa he utu, ā, ka tere te tiki i tō paipa
Kei te mau tonu te Jindalai Steel Group i ngā taonga pai rawa atu o ngā paipa maitai whakarewa me ngā paipa kore hononga i roto i te umanga. Ka tangohia e mātou ā mātou taonga mai i ngā mira huri noa i Haina, kia tere ake ai te whiwhinga a ngā kaihoko i te paipa e hiahiatia ana ahakoa ngā here ture e pā ana.
Ka taea e Jindalai te āwhina i a koe ki te mōhio ki te tukanga hoko paipa mai i te tīmatanga ki te mutunga, kia tere ai te whiwhi i ngā mea e hiahiatia ana e koe ina tae ki te wā hoko. Mena kei te tata mai te hoko paipa, tonoa he whakatau utu. Ka whakaratohia e mātou tētahi e tere ai te whiwhi i ngā hua e hiahiatia ana e koe.
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Wā tuku: Hakihea-19-2022
