ASTM A501 Tau Bhe paipa maitai waro kua whakarewaina, he mea hanga-wera, he mea hono kore hononga, ko te kaha kume iti rawa o te 448 MPa (65,000 psi) mō ngā momo whakamahinga hanganga.
ASTM A501mō te hanga me te mahi i ngā ngongo maitai waro kua whakarewaina wera-hanga me te kore hononga mō ngā tono hanganga.
Ka taea e ēnei ngongo maitai te mangu (kāore i pania) te pania rānei ki te waikura wera, ā, kua nui ake te ātete o te mea whakamutunga ki te waikura nā te tukanga paninga, kia pai ai mō ngā āhuatanga taiao maha.
E whakamahia whānuitia ana ēnei paipa rino i roto i ngā piriti, i ngā whare, me te maha atu o ngā tono hanganga whānui.
E toru ngā taumata o te paipa rino e whakarōpūtia ana e te ASTM A501,tohu A, tohu B, me te tohu C.
Ko te Wāhanga B te mea e whakamahia whānuitia ana o ngā wāhanga e toru nā te mea he pai te taurite o ōna āhuatanga mō ngā tono hanganga maha.
Me hanga te maitai ete tukanga hanga maitai hāora-taketake, oumu-ā-hiko rānei.
Ka taea te whakarewa i te maitai ki roto i ngā poro, ka taea rānei te whakarewa i ngā miro.
Ina whakarewaina ngā maitai o ngā momo rerekē i runga i te aho, me tautuhi e te kaihanga maitai te rauemi whakawhiti ka puta mai, ka tango atu mā te whakamahi i tētahi tikanga kua whakaritea hei wehewehe pai i ngā momo.
Me hanga te paipa mā tētahi o ngā tukanga e whai ake nei:he hononga kore; he whakapiringa oumu-pū (whakapiringa tonu); he whakapiringa ātete hiko (ERW) he whakapiringa pewa ruku rānei (SAW)ā, muri iho ka whakamahana anō puta noa i te wāhanga whakawhiti me te hanga wera mā te whakaiti, mā te hanga rānei, mā te mahi whakairo rānei, mā ngā mea e rua rānei.
Kua wehea te tukanga whakarewa SAW ki ngā wāhangaLSAW(SAWL) me te SSAW (HSAW).
Me mahi te hanganga āhua whakamutunga mā te whakamahi i te tukanga hanga wera.
Ka whakaaetia te tāpiri i tētahi maimoatanga wera whakataurite mō ngā ngongo he nui ake i te 13mm te matotoru o te pakitara.
| Ngā Whakaritenga Matū ASTM A501 Tau B,% | |||
| Te hanganga | Taumata B | ||
| Tātari Wera | Tātaritanga Hua | ||
| C (Waro)B | mōrahi | 0.22 | 0.26 |
| Mn (Mangane)B | mōrahi | 1.40 | 1.45 |
| P (Pūhāota) | mōrahi | 0.030 | 0.040 |
| S(Whānariki) | mōrahi | 0.020 | 0.030 |
| Cu(Parahi)B (ina tohua te maitai parahi) | meneti | 0.20 | 0.18 |
| BMō ia whakahekenga o te 0.01 ōrau i raro i te mōrahi kua tohua mō te waro, ka whakaaetia he pikinga o te 0.06 ōrau ki runga ake i te mōrahi kua tohua mō te konupora, tae atu ki te mōrahi o te 1.60% mā te tātari wera me te 1.65% mā te tātari hua. | |||
Me whakamahi ngā tauira whakamātautau i tangohia mai i ngā ngongo e rua te roa mai i ia rota he 500 te roa, i tētahi wāhanga rānei o aua roa, i ētahi atu wahi rakau hurihuri papatahi e rua rānei mai i ia rota o tētahi rahinga rite o te rakau hurihuri papatahi.
Me tutuki ngā tauira kume ki ngā whakaritenga e tika ana o ngā Tikanga Whakamātautau me ngā Whakamāramatanga A370, Tāpiritanga A2.
| Ngā Whakaritenga Kukū ASTM A501 Tau B | |||
| Rārangi | Matotoru o te Pakitara mm | Taumata B | |
| Te kaha o te kume, min, psi[MPa] | Katoa | 65000 [448] | |
| Te kaha o te hua, min, psi[MPa] | ≤25 [1] | 46,000 [315] | |
| ＞25 [1] me te ≤ 50 [2] | 45,000 [310] | ||
| ＞50 [2] me ≤ 76 [3] | 42,500 [290] | ||
| ＞76 [3] me te ≤ 100 [4] | 40,000 [280] | ||
| Te whakaroa, iti rawa, % | — | 24 | |
| Pūngao Pānga | meneti,toharite, ft/Ibf [J] | — | 20 [27] |
| meneti,takitahi, ft/Ibf [J] | — | 14 [19] | |
Me whakamahi ngā tauira whakamātautau kume i ngā tauira whakamātautau roa, i ngā tauira whakamātautau rīpene roa rānei.
Mō ngā ngongo whakarewa, me tango ngā tauira whakamātautau rīpene roa katoa mai i tētahi wāhi 90° te iti rawa mai i te wāhi whakarewa, ā, me whakarite kia kaua e papatahi te roa o te ine.
Whakamātautau rīpene whakaroame tango katoa ngā kōhao i ngā tauira.
Kaua ngā tauira whakamātautau kume e whai hapa mata e whakararuraru i te whakatau tika i ngā āhuatanga kume.
Kāore e hiahiatia he whakamātautau pānga mō ngā matotoru pakitara ≤ 6.3mm [0.25in].
| Ngā Ātete Ahu ASTM A501 | ||
| Rārangi | whānuitanga | Tuhipoka |
| Diameter o Waho (OD) | ≤48mm (1.9 inihi) | ±0.5mm [1/48 inihi] |
| ＞50mm (2 inihi) | ± 1% | |
| Matotoru o te Pakitara (T) | Te matotoru o te pakitara kua tohua | ≥90% |
| Taumaha | taumaha kua tohua | 96.5%-110% |
| Roa (L) | ≤7m (22 putu) | -6mm (1/4inihi) - +13mm (1/2inihi) |
| 7-14m (22-44 putu) | -6mm (1/4inihi) - +19mm (3/4) | |
| Te tika | Kei roto i ngā waeine emepaea (ft) ngā roa | R/40 |
| Ko ngā waeine roa he ine (m) | L/50 | |
Me kore he hapa o ngā ngongo hanganga, ā, me maeneene te āhua i puta mai i te tukanga hanga hurihuri wera.
Ina neke atu i te 10% o te matotoru o te pakitara ingoa te hohonutanga o ngā hapa i runga i te mata o te paipa, ka kiia ēnei hapa kāore e tutuki. Ka whakaaetia te whakatika mā te whakarewa ina whakaaetia i waenganui i te kaihoko me te kaihanga. I mua i te whakatika mā te whakarewa, me tango katoa ngā hapa hei whakatika mā te tapahi, mā te huri rānei.
Mō ngā paipa hanganga e hiahiatia ana kia whakakikoruatia ki te konukōre wera, me tutuki tēnei paninga ki ngā whakaritenga e tika ana o te WhakatakotorangaASTM A53.
Me tohu ia roa o ngā ngongo hanganga mā te whakamahi i tētahi tikanga tika, pērā i te hurihuri, te tā, te tā, te peita rānei.
Me whai i te tohu ASTM A501 ēnei mōhiohio e whai ake nei:
Ingoa o te kaihanga
Waitohu, tohu hokohoko rānei
Rahi
Ingoa o te paerewa (kāore e hiahiatia te tau o te whakaputanga)
Tau
Mō ngā ngongo hanganga <50 mm [2 inihi] OD, e whakaaetia ana te tohu i ngā mōhiohio maitai ki runga i tētahi tapanga e piri ana ki ia paihere.
Ka whakakotahi te maitai ASTM A501 Grade B i te kaha me te ngāwari me te tukanga whakaputa wera-hanga, e pai ai mō ngā momo tono hanganga.
Te hanga me te hangaE whakamahia ana i roto i ngā mahi hanga whare me ngā mahi hangahanga e hiahiatia ana he kaha me te pakari o ngā rauemi pakari. Kei roto i tēnei ko ngā whare, ngā papa tākaro hākinakina, ngā piriti, me ētahi atu hanganga.
Ngā Whare AhumahiNā tōna kaha nui, he pai mō te whakamahi i roto i ngā whare ahumahi pēnei i ngā wheketere me ngā whare putunga he mea nui te kounga o te hanganga.
Ngā hanganga kawe wakaE whakamahia ana tēnei momo i roto i te hanga i ngā hanganga kawe waka, tae atu ki ngā teihana tereina, ngā taunga rererangi, me ngā ara whakawhiti i ngā huarahi tere.
Ngā Wāhanga HangangaE whakamahia whānuitia ana hoki i roto i te hanga i ngā wāhanga hanganga pēnei i ngā pou, ngā kurupae, me ngā taura, e hanga ana i te anga o ngā hanganga rerekē.
Te hanga taputapuI roto i te hanga taputapu taumaha me ngā mīhini, ka taea te whakamahi mō ngā wāhanga e hiahia ana ki ngā wāhanga hanganga kaha-teitei.
Me whakarato te kaihanga ki te kaihoko he tiwhikete hanganga ture e whakaatu ana i te tauira, te whakamātautau, me te tirotiro i te hua i runga anō i tēnei whakatakotoranga me ētahi atu whakaritenga kua tohua i roto i te ota hoko, i te kirimana rānei, ā, kua tutuki katoa aua whakaritenga. Me whakauru ki roto i te tiwhikete hanganga ture te tau me te tau i tukuna ai.
He kaihanga me te kaiwhakarato paipa maitai waro whakarewa kounga teitei a Botop Steel mai i Haina, he kaihoko paipa maitai tuimotu anō hoki.
He kaha te whakapau kaha a Botop Steel ki te kounga, ā, e whakatinana ana i ngā mana whakahaere me ngā whakamātautau pakari heikia pono ai te hua. Ka whakaratohia e tā rātou tīma mātau he otinga whaiaro me te tautoko tohunga, me te arotahi ki te makona o ngā kiritaki. Kei te tumanako mātou ki te mahi tahi me koe.
