ASTM A334Tau 6He paipa maitai waro kaha-teitei, pāmahana-iti, ko te nui o te waro he 0.30%, ko te nui o te konupora he 0.29-1.06%, ko te kaha kume iti rawa he 415Mpa (60ksi), ā, ko te kaha whakaputa he 240Mp (35ksi).
E whakamahia nuitia ana i roto i te mara o ngā whakaurunga hau māori wai, te hangarau porowhita, me te hangarau pouaka whakamātao, e urutau ana ki ngā taiao pāmahana tino iti.
Ka taea te whakaputa i te paipa maitai ASTM A334 Grade 6 mā te whakamahi i ngā tukanga tui, i ngā tukanga whakarewa rānei.
Kei roto i ngā tukanga whakarewa ngā momo tikanga pēnei i tete whakarewa ātete hiko (ERW)mewhakarewa pewa ruku (SAW).
Kei raro nei te tukanga whakaputa mōTe Whakarewa Āwhata Ruku Roa (LSAW).
Hei kaihanga o ngā ngongo maitai kua whakarewaina, ka taea e mātou te whakatutuki i ngā hiahia motuhake o ā mātou kiritaki kanorau, me te tuku i te whānuitanga o ngā kōwhiringa hua hei whakarite i te mahi me te kounga pai rawa atu mō ia tono.
Mā te hononga kotahi-wahi o te ngongo LSAW ka tino whakapai ake i te kaha whānui o te ngongo, ka taea ai te tu atu i ngā pēhanga teitei ake.
Hei tāpiritanga, he tino pai mō te hanga paipa rino he whānui nui, he pakitara matotoru hoki e tutuki ai ngā hiahia o te ASTM A334 Grade 6 i roto i ngā pūnaha ahumahi me te tuku pūngao nui, pērā i te hanganga o ngā whakaurunga hau māori wai (LNG) nui.
I taua wā anō, mā te whakahaere i ngā āhuatanga tika ka ōrite te whānui o ngā paipa me ngā matotoru o te pakitara hei whakapai ake i te pono o te hononga me te ārai i te turuturu i roto i ngā pūnaha paipa.
Whakarerekētia mā te whakamahana ki te pāmahana ōrite kāore i raro iho i te 1550 °F [845 °C] ka whakamatao ki te hau, ki te rūma whakamatao rānei o te oumu e whakahaerehia ana e te hau.
Mena e hiahiatia ana te whakamātao, me whakawhitiwhiti kōrero.
Kua hangaia te hanganga matū o te paipa maitai ASTM A334 Grade 6 hei whakarite i ngā āhuatanga miihini pai i ngā pāmahana iti, me te pakari hoki mō te mahi pono i raro i ngā āhuatanga tino kino.
| Tau | C (Waro) | Mn (Mangane) | P (Pūhāora) | S (Whānariki) | Si (Hikona) |
| Tau 6 | mōrahi 0.30 | 0.29-1.06 | mōrahi 0.025 | mōrahi 0.025 | iti rawa 0.10 |
| Mō ia whakahekenga o te 0.01% waro i raro i te 0.30%, ka whakaaetia kia piki ake te konupūmā o te 0.05% ki runga ake i te 1.06% ki te mōrahi o te konupūmā o te 1.35%. | |||||
Mō ngā maitai Taumata 1, Taumata 6 rānei, kāore e whakaaetia kia whakaratohia he taumata whakakoi mō ngā huānga ehara i te mea e hiahiatia ana. Heoi anō, e whakaaetia ana kia tāpirihia ngā huānga e tika ana mō te tango waikura o te maitai.
Ka whakahaerehia ngā whakamātautau pānga ki ngā paipa maitai o te Tau 6 i te -45°C [-50°F] hei huarahi ki te manatoko i te pakari me te ātete pānga o te rauemi i roto i ngā taiao pāmahana tino iti.
I whakahaerehia te whakamātautau mā te tīpako i te kaha pānga e tika ana i runga i te matotoru o te pakitara o te paipa maitai.
Ngā uara roa iti rawa i tatauhia mō ia hekenga 1/32 inihi [0.80 mm] o te matotoru o te pakitara.
| Tau | Rockwell | Brinell |
| ASTM A334 Tau 6 | B 90 | 190 |
Me whakamātautau ia paipa kia kore e whakangaro mā te hiko, mā te wai rānei, kia rite ki te Whakatakotoranga A1016/A1016M.
Ki te kore e tohua tētahi atu mea i roto i te ota hoko, ko te momo whakamātautau ka whakamahia me whiriwhiri e te kaihanga.
Whakamātautau Whakapapatahi
Whakamātautau Mura (Ngā Ngongo Tuitui Kore)
Whakamātautau Flange (Ngā Ngongo Whakarewa)
Whakamātautau Whakapapatahi Whakamuri
1. Ngā whakaurunga hau taiao wai (LNG)Nā te mea he tino pai ngā āhuatanga pāmahana iti, e whakamahia whānuitia ana te paipa maitai o te Wāhanga 6 i roto i ngā whare hanga LNG, rokiroki me te kawe. Me whai rauemi ēnei whare e mau tonu ana te kaha me te pakari i ngā pāmahana tino iti.
2. Ngā pūnaha kawe hinu me te hau: e whakamahia ana hei kawe i ngā hauwaiwai wai, hau rānei, pērā i te hau hinu waikura (LPG) me ētahi atu wai pāmahana iti i roto i te taiao pāmahana iti.
3. Hangarau pouaka whakamātao me ngā whare rokiroki makaririE pā ana hoki tēnei ki ētahi atu wāhanga o te hangarau pouaka whakamātao, pērā i ngā pūnaha tio me te rokiroki matao i roto i te tukatuka kai me ētahi atu tukanga matū e hiahia ana ki te whakahaere i te pāmahana iti.
4. Te hangarau porowhitaI roto i ngā kaupapa hangarau i ngā rohe pōuri, pērā i ngā teihana rangahau pūtaiao i te Arctic, i te Antarctica rānei, ka whakamahia ēnei hei hanga pūnaha me ngā hanganga kawe hiko pumau, pono hoki, me kaha ki te tu atu i ngā pāmahana tino makariri me ngā āhuatanga taiao kino.
5. Ngā pūnaha hauhautanga me ngā whakawhiti weraE whakamahia whānuitia ana hoki i roto i ngā pūnaha hauhautanga nui me ngā whakawhiti wera, e hiahia ana kia mahi pai i ngā pāmahana iti kia pai ai te whai huatanga me te haumaru o te pūnaha.
6. Te hangarau hiko me ngā teihana hikoI roto i ngā kaupapa hangarau hiko motuhake, pērā i ētahi momo teihana hiko, ka taea te whakamahi i ngā ngongo maitai Taumata 6 hei whakahaere i ngā wai, i ngā hau rānei i ngā pāmahana iti hei whakarite i te mahi haumaru me te whai hua o te pūnaha.
EN 10216-4:P265NLE whakamahia ana mō ngā oko pēhanga cryogenic me ngā pūnaha paipa cryogenic, he pakari, he kaha hoki, ā, he pai mō te whakamahi i roto i ngā taiao cryogenic.
DIN 17173:TTSt41NHe mea hanga mō ngā mahi pāmahana iti, he tino pai te mahi pāmahana iti, ā, he mea whakamahi noa i roto i ngā taputapu me ngā paipa e hiahia ana ki ngā taiao mahi pāmahana tino iti.
JIS G3460:STPL46Whakamahia mō ngā pūnaha kawe paipa i ngā taiao pāmahana iti, ka taea te tu atu i ētahi pānga me ngā pēhanga pāmahana iti.
GB/T 18984:09Mn2VHe mea motuhake tēnei rauemi ki te hanga ngongo maitai kore hononga mō te whakamahi i ngā taiao pāmahana iti, he pakari pai ki te pāmahana iti, ā, he ātete hoki ki te pakaru.
I te wā e whiriwhiri ana i ēnei rauemi ōrite, he mea nui kia whakarite kia tutuki i ō rātou hanganga matū me ngā āhuatanga hangarau ngā paearu tono me ngā whakaritenga mahi e hiahiatia ana.
Me whakataurite taipitopito ēnei tawhā, ā, me whai pea ētahi atu tukanga whakamātautau me te tiwhikete hei manatoko i te pai me te mahi a te rauemi.
Mai i tōna whakatūnga i te tau 2014, kua riro a Botop Steel hei kaiwhakarato matua opaipa maitai waroi te Tai Tokerau o Haina, e mōhiotia ana mō te ratonga pai rawa atu, ngā hua kounga teitei, me ngā otinga whānui. He maha ngā momo paipa rino waro me ngā hua e pā ana ki te kamupene, tae atu ki ngā paipa rino kore-tuuturu, ERW, LSAW, me te SSAW, me te rārangi katoa o ngā hononga paipa me ngā flanges.
Kei roto hoki i ana hua motuhake ngā koranu kounga teitei me ngā maitai kore waikura austenitic, i hangaia kia tutuki ai ngā hiahia o ngā kaupapa paipa rerekē.
