Ngongo Rapa Whakakikoruatia ki te Uku
Ka whakamahia te ngongo rapa uku i roto i ngā āhuatanga tino kaha, ina hiahiatia he whakakapinga auau mō te ngongo rapa kore-uku. Waihoki, ka taea te tāuta i te ngongo rapa uku ki tētahi momo mīhini wiri, ki ētahi taputapu kore-tūturu rānei. Ka taea e ia te whakanui ake i te kōwhiringa mō ngā kaihangarau he whānui ngā huarahi tāutanga me te whakahaere.
Ngā Āhuatanga
1. Ātete kakahu
Ko te ātete kakahu o te ngongo rapa uku he 10 ngā wā teitei ake i te paipa maitai noa, ā, e 20 ngā wā teitei ake i te ngongo noa;
2. Ātete ki te waikura
Ka taea e te rapa uku me te rapa kounga teitei te ātete ki ngā āhuatanga kino katoa;
3. Ātete pānga
Ka pā te pānga o te aukati rapa me te mimiti ki te kaha uku ki te kaha uku, nō reira ka pā te SHP-CR ki te ngongo rapa uku ātete-mau mō ngā matūriki nunui;
4. Mama te taumaha
Ko te taumaha he 30% noa iho o ngā paipa rino;
5. Ngāwari
Mā te hoahoa o te uku porotaka i roto i te rapa me te whakaritenga tika ka pai te ngāwari o te paipa, kāore he pānga o te piko koki nui ki te uku;
6. He tere, he watea hoki te tāutanga
Whakaratohia ngā hononga o te flange pumau, te flange hohe, te tīwiri, te hononga tere rānei.
Ngā Whakatakotoranga Hangarau
1. Ngā Rahi Diameter mai i te 1 inihi ki te 24 inihi
2. Roa tae atu ki te 20 mita
3. Te pēhanga whakahaere mōrahi o te 150 Psi
4. Te pāmahana whakahaere mōrahi o te 250˚F
Te rā o te ine
| Rahi (inihi) | ID (inihi) | OD (inihi) | Te Roa Mōrahi (putu) | Te pūtoro piko iti rawa (inihi) |
| 1 | 1.00 | 1.65 | 32LF | 20 |
| 1¼ | 1.25 | 1.97 | 32LF | 25 |
| 1½ | 1.50 | 2.20 | 32LF | 30 |
| 2 | 2.00 | 2.83 | 65LF | 40 |
| 2½ | 2.67 | 3.70 | 65LF | 54 |
| 3 | 3.00 | 4.13 | 65LF | 60 |
| 3½ | 3.27 | 4.72 | 65LF | 64 |
| 4 | 4.00 | 5.51 | 65LF | 80 |
| 6 | 6.00 | 7.48 | 65LF | 120 |
| 8 | 7.64 | 9.25 | 32LF | 153 |
| 10 | 9.65 | 11.42 | 32LF | 193 |
| 12 | 11.77 | 13.78 | 32LF | 235
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