Te Hiranga o te ASTM A139 i roto i te Hanganga Paipa Hau Taiao o raro whenua
Paipa maitai waro porowhita i hangaia heiASTM A139he mea hanga motuhake mō ngā mahi o raro whenua pērā i ngā pūnaha tuku me te tohatoha hau māori. Ka hangaia ēnei paipa mā te whakamahi i tētahi tukanga whakarewa motuhake e hanga ana i ngā hononga kaha me te pakari, he mea nui ki te tū atu i ngā pēhanga o raro whenua me ngā āhuatanga taiao ka pā ki ēnei paipa.
Āhuatanga Mīhini
| Tau 1 | Tau 2 | Tau 3 | |
| Te Pūtake Hua, te kaha hua rānei, min, Mpa(PSI) | 205(30 000) | 240(35 000) | 310(45 000) |
| Kaha kume, min, Mpa(PSI) | 345(50 000) | 415(60 000) | 455(66 0000) |
Mā te tukanga whakarewa porowhita e whakamahia ana i roto i te ASTM A139 ka hoatu he mata o roto maeneene, ōrite hoki ki te paipa, he mea nui tēnei hei whakarite i te rere pai o te hau māori i roto i te paipa. Kei te wātea hoki ēnei paipa i roto i ngā momo diameter me ngā matotoru o te pakitara, e āhei ai te ngāwari o te hoahoa me te hanganga kia tutuki ai ngā whakaritenga motuhake o tētahi pūnaha tuku, tohatoha rānei hau māori.
Haunga te pono me te roa, ka whakaratohia e ngā paipa ASTM A139 te ātete ki te waikura, he mea nui tēnei hei whakarite i te pumau mō te wā roa o ngā paipa hau maori o raro whenua. Ko te rauemi maitai waro e whakamahia ana i roto i ēnei paipa he mea hanga motuhake hei ātete ki te waikura, kia mau tonu ai te hanganga o ngā paipa, kia kore ai hoki e turuturu mō ngā tau e haere ake nei.
He mea tino nui te haumaru i roto i te hanganga o ngā paipa hau maori i raro i te whenua. Ka hangaia, ka whakamatautauria hoki ngā paipa ASTM A139 kia rite ki ngā paerewa me ngā whakaritenga ahumahi tino pakari, kia taea ai e rātou te tu atu ki ngā wero ahurei o ngā tono raro i te whenua. Mā tēnei ka marino te hinengaro o ngā kamupene hau maori, ngā kaiwhakahaere me te marea i te mōhio he pono, he haumaru hoki te hanganga e tuku ana i te hau maori.
Hei whakamutunga, ASTM A139paipa maitai waro porowhita kua whakapirihiaHe mea nui te mahi a te paipa hau māori i roto i te hanganga o ngā paipa hau māori i raro i te whenua. Nā te roa, te ātete ki te waikura, me te tutuki i ngā paerewa ahumahi, he mea pai mō ngā kaupapa hanganga nui pēnei. Ina tae mai ki te whakarite i te haumaru, te pono, me te whai huatanga o ngā pūnaha tuku me te tohatoha hau māori, he whakatau te whakamahi i te paipa ASTM A139 e kore e taea te wareware. Mā te whiriwhiri i ngā rauemi tika mō ēnei tono i raro i te whenua, ka taea e tātou te whakarite kia noho haumaru, kia pono hoki ā tātou hanganga hau māori mō ngā whakatipuranga e haere ake nei.
