Ka wehea ngā paipa maitai whakarewa ki:
Paipa Hiko Ātete Whakarewa(ERW),Paipa Rino Porowhita(SSAW),Paipa Whakarewahia Āwhata Ruku Roa(LSAW)
Rahi:
①Paipa Rino ERW:
OD: 21.3mm ~ 660mm; TAUmaha: 1mm ~ 17.5mm; ROA: 0.5mtr ~ 22mtr
②Paipa Rino LSAW:
OD: 406mm ~ 1422 mm; TAUmaha: 6.4mm ~ 44.5mm; ROA: 5mtr ~ 12mtr
③Paipa Rino SSAW:
OD: 219.1mm ~ 3500mm; TAU: 6mm ~ 25mm (Tae atu ki te 1''); ROA: 6mtr ~ 18mtr, SRL, DRL
Paerewa me te Taumata:
ASTM A53, Tau A/B/C, API 5L, PSL1, PSL2, GR.B/X42-X80, ASTM A795, ASTM A135, ASTM A252, GR.1/2/3, AWWA C200
▇ ▍ Whakaahuatanga
Ka hangaia te paipa rino whakarewa mā te whakamahi i ngā pereti rino papatahi, i ngā rīpene rino rānei, ā, mā te tukanga hanga ka hangaia he hononga ki roto i tōna tinana. Ina koa, ina hangaia ngā paipa rino whakarewa, ka pikohia he pereti rino, he rīpene rānei, ā, ka whakarewahia kia rite ki te āhua paipa porowhita, tuku iho, kia rite rānei ki te āhua tapawhā. Ko ngā paipa LSAW, ngā paipa SSAW me ngā paipa ERW he paipa rino whakarewa katoa, ā, ka whakarōpūtia i runga i te tikanga whakarewa. Hei tauira, ka whakarewahia te paipa LSAW ki te taha roa, ā, ka whakarewahia te paipa SSAW ki te taha porowhita. Ko te paipa ERW he whakarewa ātete hiko, ka hua ake he hononga e rere whakarara ana i te tinana o te paipa.
▇ ▍Paipa Rino ERW
Ko ngā paipa whakarewa auau-teitei he mea tapahi tika te nuinga, engari ko ngā paipa maitai whakarewa tapahi tika kāore e tika kia tapahi auau-teitei. Ko te paipa maitai whakarewa ātete hiko ātete auau-teitei ka hangaia e te pānga kiri me te pānga tata o te ia auau-teitei i muri i te hanganga o te pereti koiri wera-hurihia e te mīhini hanga, ā, ka whakamahanahia te taha o te ngongo kore, ka whakarewahia, ā, ka mahia te whakarewa pēhanga i raro i te mahi a te roera pēhi hei whakatutuki i te whakaputanga. He rerekē te paipa maitai whakarewa ātete auau-teitei i te tukanga whakarewa paipa whakarewa noa. He mea hanga te whakarewa ki te rauemi turanga o te tinana rīpene maitai, ā, he pai ake te kaha miihini i tērā o te paipa whakarewa whānui. He maeneene te mata, he tino tika, he iti te utu, ā, he iti te teitei o te hononga whakarewa, he pai ki te paninga o te paninga ārai-waikura 3PE.
▇ ▍Paipa Rino LSAW
Ka hangaia te whakarewa pewa ruku whakaroa mā te whakamahi i tētahi pereti matotoru kotahi hei rauemi mata, ka pēhi (hurihuri) i te pereti maitai i roto i tētahi pokepokea ai, i tētahi mīhini hanga rānei ki roto i tētahi ngongo parakore, mā te whakamahi i te whakarewa pewa ruku taha-rua, me te whakawhānui i te diameter. Ka taea te whakarite aunoa i te nui o te whāngai pereti maitai kia rite ki ngā momo maitai rerekē, ngā matotoru pakitara, me te whānui pereti. I taua wā anō, ka ārai pai te mahi whakatikatika i te rerekētanga o te ahua i ngā pānga kino o te rerekētanga o te pokepokea ai ki te hanga, ā, ka whakarite kia papatahi te roa katoa o te pereti maitai i te wā e pēhi ana. He ōrite te taahiraa whāngai i te wā e hanga ana, ka whakarite kia porowhita te ngongo parakore me te papatahi o te taha whakarewa. He whānui ngā whakaritenga o te hua kua oti, ā, he pai te pakari, te kirihou, te ōrite, me te kiato o te whakarewa. He painga ōna ko te diameter paipa nui, te matotoru pakitara paipa, te ātete pēhanga teitei, te ātete pāmahana iti, me te ātete waikura kaha.
▇ ▍Paipa Rino SSAW
Paipa whakarewa porowhita (paipa SSAW, e kiia ana hoki he paipa HSAW). Ka hangaia te paipa mā te hangarau whakarewa pewa porowhita ruku. Ka hangaia ngā paipa whakarewa porowhita mā te whakamahi i ngā pereti whaiti, i ngā koiri wera rānei, ka tino whakaiti i ngā utu whakaputa. Ko te āhua o te raina whakarewa he rite ki te porowhita. Mā te tukanga whakarewa porowhita ka taea te whakaputa paipa whānui e tika ana mō te kawe i ngā rahinga hinu me te hau nui. Ko ētahi paipa SSAW i mua he iti noa te pēhanga.
Wā tuku: Oketopa-16-2023