Te wehewehe tere i ngā paipa Φ, DN, me ngā inihi

I roto i te hoahoa me te hoko i ngā paipa, ngā hononga paipa me ngā takirere, e toru ngā waeine whakatakotoranga e ngāwari ana te whakapoauau i te Φ, te DN me te inihi (“). Ko tō rātou rerekētanga matua ko: Ko Φ te tohu i te diameter o waho tūturu, ko DN te waehere whakatakotoranga i roto i te pūnaha ine, ā, ko ngā inihi te waehere whakatakotoranga i roto i te pūnaha imperial. Muri iho, ka whakamāramahia ngā rerekētanga taipitopito me ngā hononga i waenganui i ngā mea e toru:

1. Ngā rerekētanga o ngā whakamāramatanga matua

Φ (diameter):Ko te Φ te reta Kariki e tohu ana i te diameter tūturu (ko te diameter o waho te tikanga). Koinei te tautuhi tino mārama, ā, kāore e hiahiatia he tahuritanga. Hei tauira, ko te tikanga o te Φ114.3 ko te diameter tūturu o waho o te paipa he 114.3mm.

DN (Diameter Ingoa):Ko te DN (Diameter Ingoa) te diameter ingoa i roto i te pūnaha ine. Ehara i te diameter o roto, ehara hoki i te diameter o waho, engari he "rahi ingoa" kua tohua hangai hei whakangāwari i te hononga (tata ki te toharite o te diameter o roto me te diameter o waho). Hei tauira, he waehere whakatakotoranga noa iho te DN100, ā, ko tōna diameter o waho tuturu he 114.3mm, 108mm rānei.

Inihi (“):Ko te inihi te ine roa i roto i te pūnaha emepaea (1 inihi = 25.4mm). I roto i ngā paipa, e tohu ana hoki i te diameter ingoa. Hei tauira, ko te 4″ e tohu ana i te paipa 4-inihi, ā, ko tōna diameter waho tuturu he 114.3mm.

2. Te mārama me te ahurei o te tautuhi

Φ Ko te mea tino mārama:Ko te whānui o waho kua tohua tika, ko tāu e kite ana koinā te mea ka riro i a koe, kāore he āhua ruarua.

He tino motuhake ake ngā inihi:I roto i ngā paipa Peretānia (Paipa), he ahurei te whānui o waho e rite ana ki ngā inihi. Hei tauira, ko te 4″ he Φ114.3, ko te 10″ he Φ273, kāore he whakaū anō e hiahiatia ana.

He koretake te DN:Tērā pea ka rite te uara DN kotahi ki ngā raupapa diameter waho rerekē e rua i roto i ngā pūnaha paipa ā-whare. Hei tauira, ko te DN100:

- Raupapa I (raupapa A/ao whānui):ko te diameter o waho ko Φ114.3mm

- Raupapa II (raupapa B/whakamahinga ā-whare):ko te diameter o waho ko Φ108mm

Nō reira, i te wā e hoko ana, e tuhi ana rānei, ki te tuhi noa koe i te DN100, me tohu hoki koe mēnā he raupapa I, he raupapa II rānei, ki te kore ka ngāwari te hoko i te hua hē.

3. Te whanaungatanga ōrite me te tahuritanga i waenganui i ngā mea e toru

Kāore e taea te huri i ēnei e toru mā te whakarea me te wehewehe pāngarau māmā (hei tauira, kāore e taea te whakamahi tika i te DN100 / 25.4 hei tatau i ngā inihi), engari me whakawhirinaki ki ngā ripanga whakatairite paerewa ahumahi.

4. Ngā āhuatanga e tika ana me ngā whakaritenga tapanga

DN:E whakamahia whānuitia ana i roto i ngā paipa maitai (piauau, kore-piauau rānei), ngā paipa rino maka, ngā paipa kirihou, me ētahi atu mō te kawe wai me te hau.

Φ:E whakamahia whānuitia ana i roto i ngā paipa maitai kore-tui, ngā paipa maitai kore-whakarewa, ngā paipa konganuku kore-whakarewa, me ētahi atu. I te wā e tohua ana, ka whakamahia ngātahi me te matotoru o te pakitara, pērā i te Φ108×4 (ko te tikanga he diameter o waho 108mm, he matotoru o te pakitara 4mm).

Inihi:E whakamahia ana i roto i ngā paipa me ngā hononga takirere i ngā pūnaha o Amerika me Ūropi, tae atu ki ngā mara ahumahi tuku iho pērā i te hinu me te hau māori.

5. Whakarāpopototanga

Φ:E tohu ana i te whānui o waho o te paipa. Hei whiriwhiri i te mea e ōrite anatakirere pūrerehua, takirere kuaha, metakirere tirotiro, tirohia noa te whānui o waho o te paipa.

DN:Ko te waehere ine whānui ingoa anake. I te hoko i ngā takirere, kia tino whakaūhia te raupapa A/I me te B/II kia kore ai e rahua te hono i ngā flanges.TWSngā taongangā takirere pūrerehua, ngā takirere kuaha, takirere tirotirome ētahi atu hua. I te wā e tono ana, me tohu ngā tawhā raupapa kia ōrite ai te paipa.

Inihi (“):Te whānui ingoa o Peretānia, e whakamahia ana mō ngā takirere kawemai. Kāore e taea te whakamahi i te 25.4 hei huri noa i te whānui o waho. Me whakaū mā te tirotiro i te ripanga paerewa.