Kodi dimometer ya nominal ndi chiyani?

Nthawi zambiri, m'mimba mwake wa chitoliro akhoza kugawidwa mu awiri akunja (De), m'mimba mwake (D), awiri mwadzina (DN).
Pansipa ndikupatseni kusiyana pakati pa kusiyana kwa "De, D, DN".

DN ndiye m'mimba mwake mwadzina la chitoliro

Chidziwitso: Uku sikuli m'mimba mwake kapena m'mimba mwake; ziyenera kugwirizana ndi chitukuko choyambirira cha uinjiniya wa mapaipi ndi mayunitsi achifumu; Nthawi zambiri amagwiritsidwa ntchito pofotokoza chitoliro chachitsulo chopangidwa ndi chitsulo, chomwe chimafanana ndi mayunitsi achifumu motere:

4-gawo chitoliro: 4/8 inchi: DN15;
Chitoliro cha mphindi 6: 6/8 inchi: DN20;
1 inchi chitoliro: 1 inchi: DN25;
Inchi awiri chitoliro: 1 ndi 1/4 mainchesi: DN32;
Chitoliro cha theka-inchi: 1 ndi 1/2 mainchesi: DN40;
Chitoliro cha inchi ziwiri: 2 mainchesi: DN50;
Chitoliro cha inchi zitatu: mainchesi 3: DN80 (malo ambiri amalembedwanso kuti DN75);
Chitoliro cha mainchesi anayi: mainchesi 4: DN100;
Madzi, mpweya kufala zitsulo chitoliro (chitoliro chachitsulo chagalasikapena chitoliro chachitsulo chosakhala ngati kanasonkhezereka), chitoliro chachitsulo, chitoliro chachitsulo-pulasitiki chophatikizika ndi polyvinyl kolorayidi (PVC) chitoliro ndi zida zina zapaipi, ziyenera kulembedwa ndi m'mimba mwake mwadzina "DN" (monga DN15, DN20).

 

De makamaka amatanthauza awiri akunja a chitoliro
Kugwiritsiridwa ntchito kwakukulu kwa zilembo za De, ziyenera kulembedwa mu mawonekedwe a kunja kwake kwa X khoma makulidwe;

Amagwiritsidwa ntchito makamaka pofotokoza:Chitoliro chachitsulo chosasinthika, PVC ndi mapaipi ena apulasitiki, ndi mapaipi ena omwe amafunikira makulidwe omveka bwino a khoma.
Tengani kanasonkhezereka welded zitsulo chitoliro monga chitsanzo, ndi DN, De njira ziwiri kulemba ndi motere:
DN20 De25 × 2.5mm
DN25 De32 × 3mm
DN32 De40 × 4mm
DN40 De50 × 4mm

......

 

D nthawi zambiri imatanthawuza kukula kwa chitoliro chamkati, d imasonyeza kukula kwa chitoliro cha konkire, ndipo Φ imasonyeza kukula kwa bwalo wamba.

Φ ikhoza kuwonetsanso kukula kwa chitoliro chakunja, koma iyenera kuchulukitsidwa ndi makulidwe a khoma.
Mwachitsanzo, Φ25×3 amatanthauza chitoliro chokhala ndi m'mimba mwake wa 25mm ndi khoma la 3mm.
Chitoliro chachitsulo chosasinthika kapena chitoliro chachitsulo chosakhala chachitsulo, chiyenera kulembedwa "m'mimba mwake × makulidwe a khoma".
Mwachitsanzo: Φ107×4, pomwe Φ ingasiyidwe.
China, ISO ndi Japan mbali ya zitsulo chitoliro kulemba ntchito miyeso makulidwe khoma kusonyeza makulidwe khoma la mndandanda zitsulo chitoliro. Kwa mtundu uwu wa chitsulo chitoliro, njira ya mawu kwa chitoliro kunja awiri × khoma makulidwe. Mwachitsanzo: Φ60.5×3.8

De, DN, d, ф pamawu osiyanasiyana!
De-- PPR, PE chitoliro, polypropylene chitoliro OD
DN -- polyethylene (PVC) chitoliro, chitoliro chachitsulo, chitoliro chachitsulo-pulasitiki, chitoliro chachitsulo chopangidwa ndi chitsulo
d -- chitoliro cha konkriti mwadzina
ф -- chitoliro chachitsulo chosasunthika m'mimba mwake mwadzina