ASTM A53 ERWhe paipa maitaiMomo Ei roto i te whakatakotoranga A53, i hangaia mā te tukanga whakarewa ātete, ā, e wātea ana i ngā taumata Taumata A me te Taumata B.
He mea tino pai mō ngā mahi ā-mīhini me te pēhanga, ā, he maha hoki ngā wā e whakamahia ana hei kawe i te mamaoa, te wai, te hau me te hau.
Ngā painga o ngā paipa maitai ERW, pērā iutu itimehua nui, ka waiho hei rauemi whiriwhiri mō ngā tono ahumahi maha.
Botop Steelhe kaihanga me te kaiwhakarato paipa maitai waro kounga teitei mai i Haina, ā, he toa paipa maitai kore hononga hoki, e tuku ana i te whānuitanga o ngā otinga paipa maitai ki a koe!
He nui ā mātou taonga, ā, ka taea e mātou te whakatutuki i ngā hiahia tere o ā mātou kiritaki mō ngā momo rahi me ngā rahinga.
Kei roto i te ASTM A53/A53M ngā momo me ngā tohu e whai ake nei:
Momo E: He mea whakarewa ātete-hiko, Ngā Tohu A me te B.
Momo SKore he hononga, Ngā Tohu A me te B.
Momo F: He mea whakarewa ki te oumu, he mea whakarewa tonu Ngā taumata A me te B.
Momo EmeMomo Se rua ngā momo paipa e whakamahia whānuitia ana. He rerekē,Momo Fe whakamahia ana mō ngā ngongo iti ake te diameter. Nā te whanaketanga o te hangarau whakarewa, kāore i te maha te whakamahinga o tēnei tikanga hanga.
Ngā Diametera Ingoa: DN 6 - 650 [NPS 1/8 - 26];
Diameter o Waho: 10.3 - 660 mm [0.405 - 26 inihi];
Ngā tūtohi matotoru pakitara me te taumaha o ngā paipa maitai:
Ka kitea ngā ngongo pito-papatahi i te Ripanga X2.2;
Ka kitea ngā ngongo miro me ngā ngongo honohono i te Ripanga X2.3.
Ka whakaaetia hoki e te ASTM A53 te whakarato i ngā paipa me ētahi atu rahi mena ka tutuki i te paipa ngā whakaritenga katoa o tēnei whakatakotoranga.
ERWe whakamahia whānuitia ana hei hanga paipa maitai waro me te koranu iti, porowhita, me te tapawhā.
Ko te hanga e whai ake nei ko te tukanga whakaputa mō te whakaputapaipa maitai porowhita ERW:
a) Te whakarite rauemiKo te rauemi tuatahi he koiri maitai kua hurihia ki te wera. Ka papatahitia ēnei koiri, kātahi ka kutikutihia ki te whānui e hiahiatia ana.
b) Te HangaMā te haere mārire, mā roto i tētahi raupapa o ngā rōra, ka hangaia te rīpene hei hanganga porowhita tuwhera. I roto i tēnei tukanga, ka āta whakatatahia ngā taha o te rīpene hei whakarite mō te whakarewa.
c) Te whakarewaI muri i te hanganga o te hanganga ngongo, ka whakamahanahia ngā taha o te rīpene maitai e te ātete hiko i roto i te rohe whakarewa. Ka tukuna he iahiko auau-teitei mā roto i te rauemi, ā, ka whakamahia te wera i puta mai i te ātete hei whakamahana i ngā taha ki tō rātou ira rewa, kātahi ka whakarewahia ngātahi mā te pēhanga.
d) Te tango i ngā paruI muri i te whakarewanga, ka tangohia ngā pūwero whakarewa (te konganuku taikaha mai i te whakarewanga) i roto, i waho hoki o te paipa kia maeneene ai te mata o roto o te paipa.
e) Te whakarite i te rahi me te roaKia oti te whakarewa me te tango i ngā pakaru, ka tukuna ngā ngongo mā roto i tētahi mīhini ine hei whakatikatika i ngā āhuatanga kia tutuki ai ngā whakaritenga whānui me te porowhita. Kātahi ka tapahia ngā ngongo ki ngā roa kua whakaritea.
f) Te tirotiro me te whakamātautauKa whakamātauhia, ka tirotirohia hoki te paipa rino, tae atu ki te whakamātautau ultrasonic, te whakamātautau hydrostatic, me ētahi atu, hei whakarite kia tutuki te kounga o te paipa rino i ngā paerewa me ngā whakaritenga.
g) Te maimoatanga mataHei whakamutunga, ka taea te whakahaere i ētahi atu maimoatanga mō te paipa rino pērā i te whakawerawera me te tuku peita, te peita rānei, ētahi atu maimoatanga mata rānei hei whakarato i te tiakitanga waikura me te ataahua anō hoki.
Ngā Whakarewa Momo E, Momo F rānei, Tau BMe whakamahana te paipa, me rongoā rānei ki tētahi atu tikanga i muri i te whakarewanga kia kore ai he martensite kāore i whakamaroketia.
Me iti rawa te pāmahana o te maimoatanga wera1000°F [540°C].
Ina whakawhanuitia te paipa i te makariri, kaua te whakawhanui e neke atu i te1.5%o te diameter waho kua tohua o te paipa.
ANgā huānga e rimaCu, Ni, Cr, Mo, meVkaua e neke ake i te 1.00% te tapeke.
BMō ia whakahekenga o te 0.01% i raro i te mōrahi waro kua tohua, ka whakaaetia te pikinga o te konupūmā ki runga ake i te mōrahi kua tohua o te 0.06% tae atu ki te mōrahi o te 1.35%.
CMō ia whakahekenga o te 0.01% i raro i te mōrahi waro kua tohua, ka whakaaetia te pikinga o te konupūmā ki runga ake i te mōrahi kua tohua o te 0.06% tae atu ki te mōrahi o te 1.65%.
Āhuatanga Kume
| Rārangi | Whakarōpūtanga | Taumata A | Taumata B |
| Kaha kume, min | MPa [psi] | 330 [48,000] | 415 [60,000] |
| Te kaha o te tuku, min | MPa [psi] | 205 [30,000] | 240 [35,000] |
| Te toronga i roto i te 50 mm [2 inihi] | Tuhipoka | A,B | A,B |
Tuhipoka AKo te roanga iti rawa i roto i te 2 inihi[50 mm] me whakatau e te whārite e whai ake nei:
e = 625,000 [1940] A0.2/U0.9
e = te roanga iti rawa i roto i te 2 inihi, 50 mm rānei i roto i te ōrau, whakaawhiwhia ki te ōrau tata
A = te iti iho i te 0.75 inihi2[500 mm]2] me te horahanga whakawhiti-wāhanga o te tauira whakamātautau kume, i tatauhia mā te whakamahi i te diameter waho kua tohua o te paipa, te whānui ingoa rānei o te tauira whakamātautau kume me te matotoru pakitara kua tohua o te paipa, me te uara kua tatauhia kua whakaawhiwhihia ki te 0.01 tata ki roto2 [1 mm]2].
U=te kaha kume iti rawa kua tohua, psi [MPa].
Tuhipoka BTirohia te Ripanga X4.1, te Ripanga X4.2 rānei, ko tēhea te mea e tika ana, mō ngā uara roa iti rawa e hiahiatia ana mō ngā huinga rerekē o te rahi tauira whakamātautau kume me te kaha kume iti rawa kua tohua.
Whakamātautau Piko
Mō te paipa DN ≤ 50 [NPS ≤ 2], me taea te piko matao i roto i te 90° huri noa i te mandrel porotaka, ko te whānui o taua paipa he tekau mā rua ngā wā o te whānui o waho kua tohua o te paipa, me te kore e puta he kapiti i tētahi wāhanga, me te kore hoki e whakatuwhera i te whakarewa.
Takirua-tino-kaha(taumaha:XXS) kāore e hiahiatia kia whakamātauhia te piko o te paipa i runga ake i te DN 32 [NPS 1 1/4].
Whakamātautau Whakapapatahi
Me whakahaere te whakamātautau papatahi ki runga i te paipa whakarewa i runga ake i te DN 50 he taumaha tino kaha (XS) he mama ake rānei.
He pai mō ngā ngongo Momo E, Taumata A me te B; me ngā ngongo Momo F, Taumata B.
Kāore e hiahiatia kia whakamatautauria ngā ngongo maitai tui kore.
Wā Whakamātautau
Mō ngā rahi katoa o ngā paipa Momo S, Momo E, me te Momo F Reanga B, me pupuri te pēhanga whakamātautau mō te iti rawa o te 5 hēkona.
Me whakamahi te whakamātautau waipū, kia kore ai e turuturu mā te hononga whakarewa, mā te tinana paipa rānei.
Ngā Pēhanga Whakamātautau
Paipa pito-koreme whakamātautau ā-wai ki te pēhanga e tika ana i roto i teRipanga X2.2,
Paipa miro-ā-honohonome whakamātautau ā-wai ki te pēhanga e tika ana i roto i teRipanga X2.3.
Mō ngā paipa rino me te DN ≤ 80 [NPS ≤ 80], kaua te pēhanga whakamātautau e neke ake i te 17.2MPa;
Mō ngā paipa rino me te DN ＞80 [NPS ＞80], kaua te pēhanga whakamātautau e neke ake i te 19.3MPa;
Ka taea te whiriwhiri i ngā pēhanga whakamātautau teitei ake mēnā he whakaritenga hangarau motuhake, engari me whiriwhiri tahi te kaihanga me te kiritaki mō tēnei.
Te Tohu
Mena i whakamatautauria te paipa mā te whakamahi i te wai, me whakaatu te tohu i tepēhanga whakamātautau.
E pā ana ngā whakaritenga e whai ake nei ki ngā Paipa Momo E me te Momo F o te Taumata B.
He whakaritenga anō kei ngā paipa tui kore kāore i roto i tēnei tuhinga.
Ngā Tikanga Whakamātautau
Ngā paipa i hangaia e ngā mīhini whakawhanui me te whakawhāiti kāore i te totoro wera: DN ≥ 50 [NPS ≥ 2], tengā whakarewai ia wāhanga o te paipa me whakaoti i tētahi whakamātautau hiko kore-whakangaro, ā, me rite te tikanga whakamātautau ki teE213, E273, E309, E570 rāneipaerewa.
Ngā paipa ERW i hangaia e te mīhini whakaiti-whānui wera: DN ≥ 50 [NPS ≥ 2]Ia wāhangame tirotirohia katoatia te paipa mā te whakamātautau hiko kore-whakangaro, me rite ki ngā tureE213, E309, rāneiE570ngā paerewa.
Kia mōhio: Ko te Mīhini Whakawhanui Diameter Totoro Wera he mīhini e totoro tonu ana, e pēhi ana hoki i ngā ngongo maitai mā roto i ngā roera i ngā pāmahana teitei hei whakarerekē i ō rātou diameter me te matotoru o te pakitara.
Te Tohu
Mena kua tirotirohia te ngongo i roto i te whakamātautau kore-whakangaro, me tohuNDEi runga i te tohu.
Papatipu
±10%.
Paipa DN ≤ 100 [NPS ≤ 4], i paunatia hei puranga.
Ngā paipa DN > 100 [NPS > 4], i paunatia takitahitia.
Diameter
Mō te paipa DN ≤40 [NPS≤ 1 1/2], kaua te rerekētanga OD e neke ake i te ±0.4 mm [1/64 inihi].
Mō te paipa DN ≥50 [NPS>2], kaua te rerekētanga OD e neke ake i te ±1%.
Ngā matotoru
Kaua te matotoru iti rawa o te pakitara e iti iho i te87.5%o te matotoru o te pakitara kua tohua.
mama ake i te taumaha tino kaha (XS):
a) paipa pito-kore: 3.66 - 4.88m [12 - 16 putu], Kaua e neke atu i te 5% o te tapeke.
b) ngā roa matapōkere takirua: ≥ 6.71 m [22 putu], Ko te roa toharite iti rawa he 10.67m [35 putu].
c) ngā roa matapōkere kotahi: 4.88 -6.71m [16 - 22 putu], kaua e neke atu i te 5% o te tapeke o ngā roa miro kua whakaratohia hei hononga (ngā wahi e rua kua honoa).
Taumaha tino kaha (XS) te taumaha, te taumaha rānei: 3.66-6.71 m [12 - 22 putu], kaua e neke atu i te 5% o te paipa katoa 1.83 - 3.66 m [6 - 12 putu].
Mō te ASTM A53, e wātea ana te whakaotinga paipa maitai i te mangu, i te piauau rānei.
PangoNgongo maitai kāore he maimoatanga mata, ka hokona tonu i muri i te tukanga hanga, mō ngā tono kāore e hiahiatia he ātete waikura tāpiri.
Me tutuki ngā paipa piauau i ngā whakaritenga e tika ana.
Tukanga
Me pania te konutea ki roto, ki waho hoki mā te tukanga tuku-wera.
Rauemi Mata
Ko te konutea e whakamahia ana mō te paninga me rite ki ngā whakaritenga o te WhakatakotorangaASTM B6.
Āhua
Me noho ngā paipa piauau kia kore he wāhi kāore i pania, he mirumiru hau, he putunga rere, he para matotoru rānei. Kāore e whakaaetia ngā puku, ngā kōpuku, ngā porowhita, ngā putunga nui rānei o te konutea e whakararuraru ana i te whakamahinga o te rauemi.
Taumaha Paninga Pirau
Me whakatau mā te whakamātautau tihore kia rite ki te tikanga whakamātautau ASTM A90.
Kaua te taumaha paninga e iti iho i te 0.55 kg/m² [ 1.8 oz/ft² ].
Paipa maitai ASTM A53 ERWe whakamahia ana i roto i ngā tono pēhanga iti ki te waenga pērā i te miihini ā-tāone, te hanga, me ngā paipa hanganga miihini. Ko ngā whakamahinga noa ko te kawe wai, te mamaoa, te hau, me ētahi atu wai pēhanga iti.
He pai te āheinga ki te whakarewa, he pai mō te hanga i ngā mahi e uru ana ki te takai, te piko, me te whakapiri.
