| Rahi me te Whakatauranga Pēhanga me te Paerewa | |
| Rahi | DN50-DN1600 |
| Whakatauranga Pēhanga | PN16-PN600, ANSI 150 pauna ~ 1500 pauna |
| Paerewa Hoahoa | API 6D, ASME B16.34, BS 5351, API 608, MSS SP-72 |
| Ngā Pito Whakarewa Pūmau | ASME B16.25 |
| Kanohi ki te Kanohi | ASME B16.10, API 6D, EN 558 |
| Rauemi | |
| Tinana | ASTM A105, ASTM A182 F304(L), A182 F316(L), me ētahi atu. |
| Kuti | A105+ENP, 13Cr, F304, F316 |
| Kaiwhakaoho | Rīwai, Taputapu, Hiko, Hauātea, Ārahi Waipēhi |
Te whakamahinga matua:
1) Te hau o te tāone: te paipa whakaputa hau, te paipa tuku raina matua me te raina peka, me ētahi atu.
2) Whakamahana pokapū: ngā paipa putanga, ngā raina matua me ngā raina peka o ngā taputapu whakamahana nui.
3) Whakawhiti wera: whakatuwhera me te kati i ngā paipa me ngā ara iahiko.
4) Ngā tipu maitai: ngā paipa wai rerekē, ngā paipa tuku hau putanga, ngā paipa tuku hau me te wera, ngā paipa tuku wahie.
5) Ngā taputapu ahumahi maha: ngā paipa maimoatanga wera maha, ngā paipa hau ahumahi me ngā paipa wera maha.
Ngā Āhuatanga:
1) He paihere pōro kua oti te whakarewa, kāore he turuturu o waho me ētahi atu āhuatanga.
2) Ka aroturukihia, ka kitea hoki te tukanga tukatuka o te porowhita e tētahi taputapu kite rorohiko matatau, nō reira he teitei te tika o te tukatuka o te porowhita.
3) Nā te mea he rite tonu te rauemi o te tinana takirere ki te rauemi o te paipa, kāore he ahotea kore taurite, kāore hoki he whakarerekētanga i puta mai i ngā rū whenua me ngā waka e rere ana i te whenua, ā, he ātete te paipa ki te koroheketanga.
4) He mea hanga te tinana o te mowhiti hiri ki te rauemi RPTFE me te ihirangi o te 25% Waro (waro) kia kore ai e turuturu (0%).
5) Ka taea te tanu tika i te takirere pōro kua whakapirihia ki te whenua, me te kore e hiahiatia he poka takirere teitei me te nui, me whakatū noa he poka iti pāpaku ki te whenua, e tino penapena ana i ngā utu hanga me te wā hangarau.
6) Ka taea te whakarite i te roa o te tinana takirere me te teitei o te kakau takirere kia rite ki ngā whakaritenga hanga me te hoahoa o te paipa.
7) He tino tika te tika o te mahi miihini o te porowhita, he māmā te mahi, ā, kāore he pokanoa kino.
8) Mā te whakamahi i ngā rauemi mata matatau ka taea te whakarite i te pēhanga ki runga ake i te PN25.
9) Ki te whakaritea ki ngā hua o te whakatakotoranga kotahi i roto i te ahumahi kotahi, he iti, he ataahua hoki te āhua o te tinana takirere.
10) I raro i te āhua o te whakarite i te mahi noa me te whakamahinga o te takirere, ko te ora ratonga neke atu i te 20 tau.