Ngā Paipa Rino Waro Whakarewahia Porowhita mō ngā Paipa Hau Māori o raro whenua – EN10219
Ko tētahi o ngā painga matua opaipa maitai waro porowhita kua whakapirihiako te kaha ki te whakaputa paipa o ngā diameter rerekē mā te whakamahi i ngā rīpene o te whānui kotahi. He tino whai hua tēnei mō ngā tono e hiahia ana ki ngā rīpene maitai whaiti hei whakaputa paipa maitai diameter nui. Mā tēnei tukanga hanga auaha ka whakarite kia pakari, kia pakari hoki ngā paipa e hangaia ana, engari kia rite tonu te kounga.
Ko ngā paipa maitai waro whakarewa porowhita he mea hanga motuhake mō te tāutanga o ngā paipa hau maori i raro i te whenua, ā, e tutuki ana i ngā whakaritenga tino pakari oEN10219. E whakamārama ana tēnei paerewa i ngā whakaritenga tuku hangarau mō ngā wāhanga hanganga tuwhera kua whakarewahia matao o ngā maitai kore-koranu me ngā maitai angiangi. Nō reira, he tino pai te paipa mō te whakamahi i roto i ngā paipa hau maori o raro whenua, ina he mea nui te ātete ki te waikura me te hanganga pai.
Āhuatanga Mīhini
| kounga maitai | te kaha hua iti rawa Mpa | Te kaha o te kume | Te roanga iti rawa % | Pūngao pānga iti rawa J | ||||
| Te matotoru kua tohua mm | Te matotoru kua tohua mm | Te matotoru kua tohua mm | i te pāmahana whakamātautau o | |||||
| <16 | >16≤40 | <3 | ≥3≤40 | ≤40 | -20℃ | 0℃ | 20℃ | |
| S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Te Hanganga Matū
| Te taumata maitai | Momo tango-waikura a | % mā te papatipu, mōrahi | ||||||
| Ingoa maitai | Tau maitai | C | C | Si | Mn | P | S | Nb |
| S235JRH | 1.0039 | FF | 0,17 | — | 1.40 | 0,040 | 0,040 | 0.009 |
| S275J0H | 1.0149 | FF | 0,20 | — | 1.50 | 0,035 | 0,035 | 0,009 |
| S275J2H | 1.0138 | FF | 0,20 | — | 1.50 | 0,030 | 0,030 | — |
| S355J0H | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
| S355J2H | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| S355K2H | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| a. Ko te tikanga tango-waikura e whai ake nei: FF: He maitai kua whakamatea katoatia kei roto ngā huānga here hauota i roto i ngā rahinga e ranea ana hei here i te hauota e wātea ana (hei tauira, iti rawa 0,020% Al katoa, 0,015% Al wairewa rānei). b. Kāore e pā te uara mōrahi mō te hauota mēnā he iti rawa te ihirangi Al katoa o te hanganga matū o te 0,020 % me te ōwehenga Al/N iti rawa o te 2:1, mēnā rānei he nui ngā huānga here-N kē atu kei roto. Me tuhi ngā huānga here-N ki roto i te Tuhinga Tirotiro. | ||||||||
Haunga tōna āheinga ki te hanga paipa rino whānui, he maha atu anō ngā painga o ngā paipa rino waro kua whakapirihia ki te porowhita. Mā tōna hangarau whakapiri porowhita ka māeneene te mata o roto o te paipa, ka whakaitihia te hekenga pēhanga me te whakapai ake i ngā āhuatanga rere. He mea nui rawa atu tēnei i roto i ngā tono paipa hau māori, ina he mea nui te rere pai me te kore e aukatia mō te mahi tino pai.
Hei tāpiritanga, he tino ātete te paipa maitai waro kua whakapirihia ki te waikura, ā, he mea tino pai mō ngā whakaurunga o raro whenua i te wā e pāngia ai te paipa e te makuku me ngā huānga oneone. Nā tōna hanganga pakari me ngā rauemi pakari, he mea tino pai mō te whakamahinga roa i roto i ngā āhuatanga taiao uaua.
Mā te whakamahinga o te maitai waro kounga teitei ka tino pai ngā āhuatanga ā-pūkaha o ngā paipa, tae atu ki te kaha kume me te ātete pānga. Nā tēnei ka waiho hei whiringa pono mōpaipa hau māori o raro whenuangā whakaurunga, i te mea ka pāngia pea ngā paipa e ngā kawenga o waho, me ngā kino pea.
Hei whakarāpopototanga, ko ngā paipa maitai waro kua whakapirihia porowhita te mea pai rawa atu mō ngā tono paipa hau maori i raro i te whenua. Mā tana tukanga hanga auaha ka taea te whakaputa i ngā paipa maitai whānui nui mai i ngā rīpene maitai whaiti, kia mau tonu ai te kounga me te pakari. Ka tutuki te paipa i ngā whakaritenga o te paerewa EN10219, ā, he tino ātete ki te waikura, he maeneene te mata o roto, ā, he kaha ngā āhuatanga miihini, he mea pai mō te whakamahinga roa me te pono i roto i ngā whakaurunga paipa hau maori i raro i te whenua.







