Niki diameter nominal？

Muri rusange, diameter yumuyoboro irashobora kugabanywamo diameter yo hanze (De), diameter y'imbere (D), diameter nominal (DN).
Hasi kugirango tuguhe itandukaniro riri hagati yiri tandukaniro "De, D, DN".

DN ni diameter nominal ya pipe

Icyitonderwa: Iyi ntabwo ari diameter yo hanze cyangwa diameter y'imbere; bigomba kuba bifitanye isano niterambere ryambere ryubwubatsi bwimiyoboro hamwe nibice byubwami; mubisanzwe bikoreshwa mugusobanura ibyuma bya galvanised, bihuye nibice byubwami kuburyo bukurikira:

Umuyoboro wibice 4: 4/8 cm: DN15;
Umuyoboro wiminota 6: 6/8 cm: DN20;
Umuyoboro wa santimetero 1: santimetero 1: DN25;
Shyiramo imiyoboro ibiri: santimetero 1 na 1/4: DN32;
Umuyoboro wa kimwe cya kabiri: santimetero 1 na 1/2: DN40;
Umuyoboro wa santimetero ebyiri: santimetero 2: DN50;
Umuyoboro wa santimetero eshatu: santimetero 3: DN80 (ahantu henshi hashyizweho kandi nka DN75);
Umuyoboro wa santimetero enye: santimetero 4: DN100;
Amazi, umuyoboro wa gazi wohereza ibyuma (umuyoboro w'icyumacyangwa umuyoboro w'icyuma udashyigikiwe), umuyoboro w'icyuma, umuyoboro wa pulasitiki wa pulasitike hamwe na polyvinyl chloride (PVC) hamwe n'ibindi bikoresho by'imiyoboro, bigomba gushyirwaho ikimenyetso cya diameter “DN” (nka DN15, DN20).

 

De ahanini yerekeza kuri diameter yo hanze yumuyoboro
Gukoresha muri rusange De labels, bigomba gushyirwaho muburyo bwa diameter yo hanze X uburebure bwurukuta;

Ahanini bikoreshwa mu gusobanura:umuyoboro w'icyuma, PVC nindi miyoboro ya pulasitike, nindi miyoboro isaba uburebure bwurukuta.
Fata umuyoboro w'icyuma usudira nk'urugero, hamwe na DN, De uburyo bubiri bwo kuranga ni ubu bukurikira:
DN20 De25 × 2.5mm
DN25 De32 × 3mm
DN32 De40 × 4mm
DN40 De50 × 4mm

......

 

D muri rusange bivuga diameter y'imbere y'umuyoboro, d yerekana diameter y'imbere y'umuyoboro wa beto, na Φ yerekana diameter y'uruziga rusanzwe

Φ irashobora kandi kwerekana diameter yinyuma yumuyoboro, ariko rero igomba kugwizwa nubunini bwurukuta.
Kurugero, Φ25 × 3 bisobanura umuyoboro ufite diameter yo hanze ya 25mm n'ubugari bwurukuta rwa 3mm.
Umuyoboro w'icyuma udafite icyerekezo cyangwa umuyoboro w'icyuma udafite ferrous, ugomba gushyirwaho "diameter yo hanze × ubugari bw'urukuta".
Kurugero: Φ107 × 4, aho Φ hashobora gusibwa.
Ubushinwa, ISO n'Ubuyapani igice cyicyuma cyerekana ibyuma ukoresheje ubunini bwurukuta kugirango werekane ubunini bwurukuta rwuruhererekane rwibyuma. Kuri ubu bwoko bwicyuma, uburyo bwo kwerekana imiyoboro hanze ya diameter × ubugari bwurukuta. Kurugero: Φ60.5 × 3.8

De, DN, d, ф y'urwego rugaragaza imvugo!
De-- PPR, umuyoboro wa PE, umuyoboro wa polypropilene OD
DN - umuyoboro wa polyethylene (PVC), umuyoboro wicyuma, umuyoboro wibyuma bya pulasitike, umuyoboro wibyuma bya diameter
d - umuyoboro wa beto wa diameter
ф - umuyoboro udafite icyuma umuyoboro wa nomero