Kodi diameter yodziwika bwino ndi iti?

Kawirikawiri, m'mimba mwake wa chitolirocho mungagawidwe m'magawo awiri: m'mimba mwake wakunja (De), m'mimba mwake wamkati (D), m'mimba mwake wodziwika (DN).
Pansipa kuti ndikupatseni kusiyana pakati pa kusiyana kwa "De, D, DN".

DN ndi m'mimba mwake mwapadera wa chitoliro

Dziwani: Izi sizili m'mimba mwake wakunja kapena m'mimba mwake wamkati; ziyenera kugwirizana ndi chitukuko choyambirira cha uinjiniya wa mapaipi ndi mayunitsi achifumu; nthawi zambiri amagwiritsidwa ntchito pofotokoza chitoliro chachitsulo chopangidwa ndi galvanized, chomwe chikugwirizana ndi mayunitsi achifumu motere:

Chitoliro cha magawo anayi: 4/8 inchi: DN15;
Chitoliro cha mphindi 6: 6/8 inchi: DN20;
Chitoliro cha inchi imodzi: inchi imodzi: DN25;
Chitoliro cha mainchesi awiri: mainchesi 1 ndi 1/4: DN32;
Chitoliro cha theka la inchi: mainchesi 1 ndi 1/2: DN40;
Chitoliro cha mainchesi awiri: mainchesi awiri: DN50;
Chitoliro cha mainchesi atatu: mainchesi atatu: DN80 (malo ambiri amalembedwanso kuti DN75);
Chitoliro cha mainchesi anayi: mainchesi 4: DN100;
Madzi, chitoliro chachitsulo chotumizira mpweya (chitoliro chachitsulo cholimbakapena chitoliro chachitsulo chosagwiritsidwa ntchito ndi galvanized), chitoliro chachitsulo chopangidwa ndi chitsulo, chitoliro chachitsulo-pulasitiki chopangidwa ndi chitsulo ndi chitoliro cha polyvinyl chloride (PVC) ndi zipangizo zina za chitoliro, ziyenera kulembedwa ndi mainchesi "DN" (monga DN15, DN20).

 

De makamaka amatanthauza m'mimba mwake wakunja kwa chitoliro
Kugwiritsa ntchito zilembo za De nthawi zonse, kuyenera kulembedwa ngati makulidwe a khoma lakunja kwa X;

Amagwiritsidwa ntchito makamaka pofotokoza:chitoliro chachitsulo chosasunthika, mapaipi a PVC ndi ena apulasitiki, ndi mapaipi ena omwe amafunikira makulidwe omveka bwino a khoma.
Tengani chitoliro chachitsulo cholumikizidwa ndi galvanized monga chitsanzo, ndi DN, De njira ziwiri zolembera ndi izi:
DN20 De25×2.5mm
DN25 De32×3mm
DN32 De40×4mm
DN40 De50×4mm

......

 

D nthawi zambiri amatanthauza m'mimba mwake wa chitoliro, d amatanthauza m'mimba mwake wa chitoliro cha konkire, ndipo Φ amatanthauza m'mimba mwake wa bwalo wamba.

Φ ingasonyezenso kukula kwa chitoliro chakunja, koma kenako iyenera kuchulukitsidwa ndi makulidwe a khoma.
Mwachitsanzo, Φ25×3 imatanthauza chitoliro chokhala ndi mainchesi akunja a 25mm ndi makulidwe a khoma a 3mm.
Chitoliro chachitsulo chopanda msoko kapena chitoliro chachitsulo chopanda chitsulo, chiyenera kulembedwa kuti "m'mimba mwake wakunja × makulidwe a khoma".
Mwachitsanzo: Φ107×4, pomwe Φ ingasiyidwe.
Gawo la China, ISO ndi Japan la zilembo zachitsulo pogwiritsa ntchito miyeso ya makulidwe a khoma kuti liwonetse makulidwe a khoma la mndandanda wa chitsulo chachitsulo. Pa mtundu uwu wa chitsulo chachitsulo, njira yofotokozera ya payipi yakunja kwa m'mimba mwake × makulidwe a khoma. Mwachitsanzo: Φ60.5×3.8

De, DN, d, ф ya mtundu wofanana wa mawu!
De-- PPR, PE chitoliro, polypropylene chitoliro OD
Chitoliro cha DN -- polyethylene (PVC), chitoliro chachitsulo chopangidwa ndi chitsulo, chitoliro chopangidwa ndi pulasitiki, chitoliro chachitsulo chopangidwa ndi galvanized m'mimba mwake
d -- m'mimba mwake wa chitoliro cha konkire
ф -- chitoliro chachitsulo chopanda msoko m'mimba mwake