Paipa Rino Whakarewahia Porowhita mō te Kaha me te Whai Huatanga Kore e Taea te Whakatairanga ASTM A252
Whakamōhio mai:
Mō te whanaketanga o ngā hanganga, he wāhanga matua ngā pūnaha paipa e whai wāhi nui ana ki ngā momo ahumahi. Mā te whakamahi i ngā rauemi me ngā tikanga tika i roto i te hanganga paipa ka roa, ka kaha, ka pono hoki.paipa maitai porowhita whakarewa ASTM A252kei mua i tēnei whanaketanga hangarau. I roto i tēnei tuhinga, ka tirohia e tātou ngā āhuatanga me ngā painga motuhake o ēnei paipa whakamiharo kua noho hei mea nui i roto i ngā kaupapa hanga hou.
Ngā Āhuatanga Hangarau o te Paipa SSAW
| kounga maitai | te kaha hua iti rawa | te kaha kume iti rawa | Te Whakaroa Iti rawa |
| B | 245 | 415 | 23 |
| X42 | 290 | 415 | 23 |
| X46 | 320 | 435 | 22 |
| X52 | 360 | 460 | 21 |
| X56 | 390 | 490 | 19 |
| X60 | 415 | 520 | 18 |
| X65 | 450 | 535 | 18 |
| X70 | 485 | 570 | 17 |
Te Hanganga Matū o ngā Paipa SSAW
| kounga maitai | C | Mn | P | S | V+Nb+Ti |
| % Mōrahi | % Mōrahi | % Mōrahi | % Mōrahi | % Mōrahi | |
| B | 0.26 | 1.2 | 0.03 | 0.03 | 0.15 |
| X42 | 0.26 | 1.3 | 0.03 | 0.03 | 0.15 |
| X46 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X52 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X56 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X60 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X65 | 0.26 | 1.45 | 0.03 | 0.03 | 0.15 |
| X70 | 0.26 | 1.65 | 0.03 | 0.03 | 0.15 |
Te Manawanui Āhuahanga o ngā Paipa SSAW
| Ngā tūponotanga āhuahanga | ||||||||||
| te whānui o waho | Te matotoru o te pakitara | te tika | porowhita kore | papatipu | Teitei mōrahi o ngā pīrere whakarewa | |||||
| D | T | |||||||||
| ≤1422mm | ＞1422mm | <15mm | ≥15mm | pito paipa 1.5m | roa katoa | tinana paipa | pito paipa | T≤13mm | T>13mm | |
| ±0.5% | e ai ki te whakaaetanga | ±10% | ±1.5mm | 3.2mm | 0.2% L | 0.020D | 0.015D | '+10% | 3.5mm | 4.8mm |
Whakamātautau Waipūmau
Kaha me te Pūmautanga Kore e Taea te Whakatairanga:
ASTM A252paipa maitai porowhita kua whakapirihiaHe mea hanga ki te maitai kounga teitei e tutuki ana i ngā paerewa ASTM A252. E whakamanahia ana e te paerewa te kaha me te pakari o ngā paipa, e pai ai mō ngā momo mahi tae atu ki te tuku hinu me te hau, ngā turanga pou me ngā hanganga wai. Ka whakanui ake ngā whakarewa porowhita i te kaha me te ātete o ngā paipa ki ngā kaha o waho, kia taea ai e rātou te tu atu ki ngā taiao pēhanga teitei me ngā āhuatanga huarere kino.
Te whai huatanga me te utu-whai hua tino pai:
Ko tētahi o ngā painga matua o te paipa maitai whakarewa porowhita ASTM A252 ko tōna tino pai o te tāutanga me te whakamahinga. He ngāwari te kawe me te whakahaere i tōna hoahoa porowhita nā te mea he mama ake tōna taumaha ki te whakataurite ki ētahi atu rauemi paipa. Hei tāpiri, mā te ngāwari o ēnei paipa ka taea te piko, ka whakaiti i ngā whakaritenga mō ngā hononga me ngā hononga. Ehara i te mea ka penapena wā noa iho tēnei, engari ka tino whakaitihia hoki ngā utu tāutanga, ka waiho tēnei momo paipa hei otinga utu-pai mō ngā kaupapa maha.
Te ātete waikura kua whakarei ake:
He raru nui te waikura i roto i ngā pūnaha paipa, inā koa i roto i ngā ahumahi e whakahaere ana i ngā matū me ngā matū waikura. Mā te paerewa ASTM A252 ka whakarite kia tino ātete ngā paipa maitai kua whakapirihia ki te waikura. He paninga tiaki ēnei paipa pērā i te epoxy, te konutea rānei hei ārai i ngā matū waikura, ka roa ake te ora o te mahi, ka whakaiti hoki i ngā utu tiaki. He tino whai hua tēnei āhuatanga i roto i ngā tono kei raro i te whenua, i te moana rānei, ina pāngia ngā paipa e ngā āhuatanga taiao kino.
Te kaha kawe nui ake:
Ko tētahi atu āhuatanga nui o te paipa maitai whakarewa porowhita ASTM A252 ko tōna kaha ki te kawe kawenga. Mā te hangarau whakarewa porowhita e whakamahia ana i roto i te tukanga hanga ka whakarei ake i te kaha o te paipa me te kaha ki te tu atu i ngā kawenga taumaha. Ahakoa e whakamahia ana i roto i te hanganga piriti, i ngā turanga hanganga, i ngā paipa o raro whenua rānei, ka whakaratohia e ēnei paipa te hanganga pai rawa atu, ka whakaiti i te mōrearea o te pakaru me te whakarite i te haumaru mō te wā roa o ngā kaupapa hanganga maha.
Te oranga tonutanga o te taiao:
I tēnei wā e āwangawanga ana te ao mō te tiaki taiao, he mea nui te whiriwhiri i ngā rauemi hanga tika. Ko ngā paipa maitai porowhita ASTM A252 e tutuki ana i ngā tikanga hanga whare pumau nā te mea he pakari, he ngāwari hoki te hangarua. He roa te ora o ngā paipa, ā, ka taea te hangarua ngāwari i te mutunga o ō rātou oranga, ka whakaiti i te hiahia mō te tango rauemi hou me te whakaiti i ngā para me ngā tukunga waro.
Hei whakamutunga:
Kua hurihia e te paipa maitai whakarewa porowhita ASTM A252 te umanga paipa me tōna kaha, tōna roa me tōna whai huatanga utu. Ka tutuki, ka hipa rānei ēnei paipa i ngā paerewa ahumahi, ā, koinei te whiringa tuatahi i roto i ngā umanga maha. Ko tōna kaha kawe kawenga me tōna ātete ki te waikura ka whakarite i te whanaketanga pumau o ngā kaupapa hanganga me te whai wāhi ki te whakatairanga i te umanga o te ao. Mā te whakamahi i ēnei paipa, ka taea e ngā kaupapa hanga te whakapai ake i te whai huatanga, te whakaiti i ngā utu me te whakarite i te pono mō te wā roa me te piri ki te pumau o te taiao.
