Kei a koe te mōhio i te ASTM A 53? B73: WĒTika MŌ TE UNS N06022, CRA HUIA me te whiu ki te korosipu i waenganui. Ko ia te tāngata toko rākau āporo e whakaaetia ana e te Pūnaha Whakamātau me te Whakamāoranga o Amerika. Kei roto i ētahi wāhi nui hoki ko ngā tāngata toko rākau nui. Nō reira, nā runga i te whakamahi mai i te mana o te papa me te papa, i ngā kaupapa hanga ki ngā rangitaki wai, ka taea e koe e whakaatu ana he mea kua kitea i te wā e kī nei he mea kua kitea i te wā e kī nei. Ka hanga ngā tāngata toko rākau i te whakatika nui, i raro i te ture ASTM A 53, kia tiakina te pai, ahakoa kē ā rānei te hanga rānei, ko ngā mahi katoa. No reira, ka taea e mātou te whakaaro, ka mahi pai ngā mea nei, ā, mo te wā e hirahira ana.
Mō ngā pīpu ASTM A 53, ko te toko rākei e whai ake ana kua āhei kēia ki te whakatū tonu me te whakatū haumaru. E hiahiatia ana he whakatū haumaru nui rawa i te wā e taki mōna, hei tauira, mō te pīpu e whakamana ana i te wai rānei, i te ara rānei, he āhei ki te whakatupu i te paheko nui me te kore kōpiko. Nā te mea, kua hangaia ngā kauwhimanga whakapiri ki runga i ngā karu poraka e taea ana he waewae iti whakatupu hei whakaaeae mai i ngā waewae o ngā whatu, ka mahia he whakapiri korehua i te wā e whakawehewehea ai ngā rawa rua i te wehenga. Ko te mea whakamutunga e hiahia nei tātou ki te kore pūngao, ā, ko te kauwhata maemae e āwhina ki te mahi pai o te pīpu i roto i tēnei whakaaro.
Kei te neke atu ngā whakaheke rite e rua mō ngā pīpu aha; te Rānga A, kaore e mana rawa ana, ā, ko tētahi atu he iti noa iho te whanonga pai. Ko te huihui haerenga o te Rānga A he 30,000 psi (pā ki roto i te kauwhanga) hei taupokihanga. Nā te mea nei, nui ake rawa te mana o ngā pīpu o te Rānga B, me te mana moe nui ake he 60,000 psi. Ki te whai ake i tēnei mana nui, ka whakamahia ngā pīpu o te Rānga B ki ngā momo whakamahi nui rawa, rānei ki ngā wāhi kore hara i te taiao, pērā i ngā wā o te mahana nui rawa rānei ko te wāhi kua kitea te whakapūmau.
Kei roto i te maha o ngā mahi me ngā rōpū hei whai wāhitanga mō ēnei pīpu. Ki te tū tonu i te rōpū pūhoro me te rōpū ngahere, e whakamahi ana ngā pīpu nei kia tuku ai te peketoa matua i tetahi wāhi ki te wāhi kē. E āwhina ana hoki rātou kia tiakina kia haere noa ai ngā rauemi nei. Ko ngā pīpu ASTM A 53 kei roto i te ao hanga hei whakatū tonu mō ngā whare rānei, ko tētahi wāhanga o ngā rangitaki horoi i waenganui i ngā momo whare rerekē. Nō reira, ka whai wāhitanga nui hoki ēnei pīpu i ngā pūhara me ngā whatu whakawehi huarangi, ā, i ngā rārangi hāora hoki. Ka whakamahia rātou kia tiakina te tari whakangungu a ngā iwi i te wā āharakeke, e tūpato ana kia kauhau i te wā e taea ana te whakapae.
He mea whakamahia ngā toto kōrari i roto i ngā whiringa mahi ā-motu me ngā whare pakihi hei hanga i te ture ASTM A 53, e hiahiatia ana hei tiaki i te haumaru mō te katoa. Ka kitea he nui ngā whanga i te taiao mā ngā toto kōrari e kore nei e whai wāhititanga ki enei ture. Ko tēnei ka tuhia ai i te rereke roroa mai i ngā toto kōrari kāore i te whai mana, ka whakatūtono i te nui o te whara i te ao tūroa, ko tērā e āhei ana ki te whakarerekē i a Papatūānuku hoki. Ka taea hoki e ēnei toto kōrari te whakahē i te kino mō ngā manuhiri kāore i te whai mana, mēnā ka pīkau i te hopu i runga i te nuinga, ka noho wehe i te momo whenua, ka puta ai ngā tahae ki te kotahi. Ki te whakamahi i ngā toto kōrari e whai mana ki te ture ASTM A 53 anake, ka taea e ngā kāwanatanga te tiaki i te haumaru mō o rātou kaimahi, ā, mō te taiao e mahi nei, ā, ka whiwhi i te itinga hauora.
Ka taea e matou te tuku i nga tahuhu H tohu Ameika/Ripene/Australianahana astm a 53, me te whakatupu i nga ratonga huruhuru, pērā i te kōwhiri me te tapa. E puta ana ō mātau mahi ki te Waehae ki te Uru o te Iwhea me Oceania. Kua tae anō ki Te Tai Hauāuru, ki te Tai Rawhiti, ki Afrika, ki te Wairua o te Tonga, me Afrika hoki.
Ko tā mātou mahi he mahi ngātahi i runga i te nui o ngā whare whatu toitoi, ā, ko ngā mea hanga katoa i tirotiro ai i mua i te tahua, ko te painga ka tūtohi. Ko ngā mea hanga matua he ngā tari katoa (ERW/SSAW/LSAW/ me te tāpuru galametē/a 53 astm/me te tari kore-pau/me te tari kōwhai), he poraka (ki te takarangi Minitaia, ki te takarangi Piritānia, ki te takarangi Austrālia H-beam toitoi), he rori toitoi, he koki toitoi, he rama toitoi, he papa toitoi, he momo katoa o ngā tauranga toitoi me ngā papa toitoi, he rori hurihuri, he rori tata, he rae whakamahere, he rori niho, he pēke, āme era atu.
Kei tā tāngata kāwanatanga i te roanga 17 tau i mua i te whakaputa toitoi ki waho, ā, e āhei ana ki te whakawhiu i te nuinga o ngā astm a 53 me ngā rori hurihuri. Ki runga anō, kei a tātou he hapū o ngā kaiarahi take tonu, e āwhina nei i te whakamahere pūtea, ā, ka taea e koutou te whakaae i ngā whakaritenga tika me ngā take pai. Ko te nui o ōu whakautu, ko te iti rawa o ngā utu!
Ko tā mātou rōpū e mōhio ana ki te hokohoko iwi kē, e mōhio tonu ana ki ngā mahi o ā rātou whakangungu me te tuku wāriu ake pūmau, ko tā rātou hoki he whai wāhi i te hoko i ngā mea ki ngā matua. Mēnā ka noho mātau ki te whakarite i ngā hiahia o ngā maha matua. Kei a mātou tonu ngā take pātata hei whakahoki i ngā pātai, ngā kotahi, ngā whakatika, me ngā hiahia. Kei te whakapono au ki te mea ka ea mātou e ai ki te hoatu i te mahi pai ki a koe.
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