Dab tsi yog lub qhovinal hla?

Feem ntau hais lus, txoj kab uas hla ntawm cov yeeb nkab tuaj yeem faib ua txoj kab uas hla (de) (dn).
Hauv qab no los muab koj qhov sib txawv ntawm cov "DE, D, DN" sib txawv.

DN yog lub qhovinal hla ntawm cov yeeb nkab

Nco tseg: Qhov no tsis yog tus twg sab nraud ntawm txoj kab uas hla; yuav tsum muaj feem cuam tshuam nrog kev txhim kho thaum ntxov ntawm cov raj xa dej engineering thiab cov chav nyob ua ke; Feem ntau siv los piav qhia galvanized steel yeeb nkab, uas sib haum rau cov dav hlau uas dav dav raws li hauv qab no:

4-seem Yas: 4/8 nti: DN15;
6-feeb yeeb nkab: 6/8 nti: DN20;
1 nti yeeb nkab: 1 nti: DN25;
Nti ob qho yeeb nkab: 1 thiab 1/4 ntiv taw: DN32;
Ib nrab-nti yeeb nkab: 1 thiab 1/2 ntiv: DN40;
Ob nti yeeb nkab: 2 nti: DN50;
Peb-nti yeeb nkab: 3 Nti: DN80 (ntau qhov chaw tseem sau tias yog DN75);
Plaub-nti yeeb nkab: 4 nti: DN100;
Dej, Roj Kev Pab Cuam Hlau Yeeb (Galvanized steel yeeb nkablossis tsis-galvanized steel yeeb nkab), cam khwb cia hlau yeeb, hlau yas composite yeeb nkab thiab lwm yam ntaub yeeb nkab cim, yuav tsum khij cov kab sib xyaw nrog cov kabinal ntawm lub nroog "DN" (xws li DN15, DN20).

 

Tsib mas yog hais txog sab nraud ntawm cov yeeb nkab
Kev siv dav dav txog tsib tus cim, yuav tsum tau sau daim ntawv lo rau hauv daim ntawv ntawm cov uas hla x phab ntsa thide;

Mas siv los piav txog:Seamless Steel Yeeb Nkab, Pvc thiab lwm cov kav dej yas, thiab lwm cov kav dej uas yuav tsum muaj cov phab ntsa ntshiab tuab.
Noj galvanized welded steel yeeb nkab raws li ib qho piv txwv, nrog DN, de ob txoj hauv kev muaj raws li nram no:
DN20 DE25 × 2.5mm
DN25 DE32 × 3mm
DN32 DE40 × 4 hli
DN40 de50 × 4 hli

......

 

D feem ntau hais txog sab hauv cov yeeb nkab ntawm cov yeeb nkab ntawm cov yeeb nkab ntawm cov yeeb nkab ntawm cov qhob yeeb nkab, thiab φ qhia txog lub taub ntawm ib lub voj voog dog dig

Φ tseem tuaj yeem qhia cov cheeb tsam sab nraud ntawm cov yeeb nkab, tab sis tom qab ntawd nws yuav tsum tau huaj vam los ntawm phab ntsa tuab.
Piv txwv li, ×25 × 3 txhais tau tias cov yeeb nkab nrog sab nraud ntawm 25 hli thiab ib phab ntsa tuab ntawm 3 hli.
Seamless steel yeeb nkab los yog tsis-ferrous hlau yeeb nkab, yuav tsum cim "sab nraud ntawm txoj taub × Phab ntsa tuab".
Piv txwv li: φ107 × 4, qhov twg yog qhov twg tuaj yeem raug rho tawm.
Tuam Tshoj, ISO thiab Nyiv Ntu Labing Siv Phab Hlau Thickness Qhov Ntev los qhia lub phab ntsa Thickness ntawm cov yeeb nkab thickness ntawm steel yeeb nkab series. Rau hom no hom yeeb nkab ntawm cov yeeb nkab steel, cov qauv ntawm kev qhia rau cov yeeb nkab sab nraud txoj kab uas cov taub hau thickness. Piv txwv li: φ60.5 × 3.8

DE, DN, DN, 6. Ntawm cov lus tshaj tawm!
De-- PPR, PE yeeb nkab, polypropylene yeeb nkab od
DN - Polyethylene (PVC) Yeeb, Cam Khwb Cia Hlau Yeeb, Hlau-Yas Composite Yeeb Nkab, Galvanized Steel Yeeb Nkab Nominal Diam
D - Qhob Yeeb Nominal Diam
ф - Seamless Steel Yeeb Nkab Nominal Dev