He aha te diameter ingoa?

I te nuinga o te wā, ka taea te wehewehe i te diameter o te paipa ki te diameter o waho (De), te diameter o roto (D), me te diameter ingoa (DN).
Kei raro nei hei wehewehe i waenga i ēnei rerekētanga "De, D, DN".

Ko te DN te diameter ingoa o te paipa

Kia mōhio: Ehara tēnei i te whānui o waho, ehara hoki i te whānui o roto; me hono atu ki te whanaketanga tōmua o te hangarau paipa me ngā waeine emepaea; e whakamahia ana hei whakaahua i ngā paipa maitai kua whakapūmautia, e rite ana ki ngā waeine emepaea penei:

Paipa 4-wāhanga: 4/8 inihi: DN15;
Paipa 6-meneti: 6/8 inihi: DN20;
Paipa 1 inihi: 1 inihi: DN25;
Paipa e rua inihi: 1 me te 1/4 inihi: DN32;
Paipa haurua-inihi: 1 me te 1/2 inihi: DN40;
Paipa e rua inihi: 2 inihi: DN50;
Paipa toru-inihi: 3 inihi: DN80 (he maha ngā wāhi kua tapaina ko DN75);
Paipa whā-inihi: 4 inihi: DN100;
Paipa maitai whakawhiti wai, hau (paipa maitai piauau(te paipa rino kore-pire rānei), te paipa rino maka, te paipa hiato maitai-kirihou me te paipa polyvinyl chloride (PVC) me ētahi atu rauemi paipa, me tohu ki te diameter ingoa "DN" (pēnei i te DN15, DN20).

 

Ko te tikanga matua o De ko te diameter o waho o te paipa
Ko te whakamahinga whānui o te tapanga De, me tapanga ki te ahua o te diameter o waho X te matotoru o te pakitara;

E whakamahia ana hei whakaahua i:paipa maitai kore-tuitui, PVC me ētahi atu paipa kirihou, me ētahi atu paipa e hiahia ana kia mārama te matotoru o te pakitara.
Hei tauira, me whakamahi i te paipa maitai kua whakapūmautia hei DN, De, e rua ngā tikanga tapanga e whai ake nei:
DN20 De25×2.5mm
DN25 De32×3mm
DN32 De40×4mm
DN40 De50×4mm

......

 

Ko te D e tohu ana i te whānui o roto o te paipa, ko te d e tohu ana i te whānui o roto o te paipa raima, ā, ko te Φ e tohu ana i te whānui o tētahi porowhita noa.

Ka taea hoki e Φ te tohu i te diameter o waho o te paipa, engari me whakareatia e te matotoru o te pakitara.
Hei tauira, ko te Φ25×3 he paipa he 25mm te whānui o waho, ā, ko te matotoru o te pakitara he 3mm.
Me tohu te paipa maitai kore-whakarewa, te paipa whakarewa kore-whakarewa rānei, "diameter o waho × matotoru o te pakitara".
Hei tauira: Φ107×4, ka taea te tango i a Φ.
Ko te wāhanga o Haina, ISO me Hapani o te tapanga paipa maitai e whakamahi ana i ngā ine matotoru pakitara hei tohu i te matotoru pakitara o te raupapa paipa maitai. Mō tēnei momo paipa maitai, ko te tikanga whakapuaki mō te diameter o waho o te paipa × te matotoru pakitara. Hei tauira: Φ60.5×3.8

De, DN, d, ф o te whānuitanga o te whakapuakitanga!
De-- PPR, PE paipa, polypropylene paipa OD
DN -- paipa polyethylene (PVC), paipa rino maka, paipa hiato maitai-kirihou, paipa maitai piauau te diameter ingoa
d -- te diameter ingoa o te paipa raima
ф -- te diameter ingoa o te paipa maitai kore hononga