Feem ntau hais lus, txoj kab uas hla ntawm cov yeeb nkab tuaj yeem muab faib ua txoj kab uas hla (De), sab hauv (D), nominal txoj kab uas hla (DN).
Hauv qab no muab qhov sib txawv ntawm qhov "De, D, DN" qhov sib txawv.
DN yog lub nominal txoj kab uas hla ntawm cov yeeb nkab
Lus Cim: Qhov no tsis yog sab nraud lossis sab hauv txoj kab uas hla; yuav tsum muaj feem xyuam rau thaum ntxov txoj kev loj hlob ntawm pipeline engineering thiab imperial units; feem ntau yog siv los piav txog galvanized steel yeeb nkab, uas sib haum mus rau imperial units raws li hauv qab no:
4-thooj yeeb nkab: 4/8 nti: DN15;
6-feeb yeeb nkab: 6/8 nti: DN20;
1 nti yeeb nkab: 1 nti: DN25;
Ntiv ob yeeb nkab: 1 thiab 1/4 nti: DN32;
Ib nrab-nti yeeb nkab: 1 thiab 1/2 nti: DN40;
Ob nti yeeb nkab: 2 nti: DN50;
Peb-inch yeeb nkab: 3 ntiv tes: DN80 (ntau qhov chaw kuj tau sau tias yog DN75);
Plaub-nti yeeb nkab: 4 nti: DN100;
Dej, roj kis tau tus mob steel yeeb nkab (galvanized steel yeeb nkablos yog tsis-galvanized steel yeeb nkab), cam khwb cia hlau yeeb nkab, steel-yas composite yeeb nkab thiab polyvinyl chloride (PVC) yeeb nkab thiab lwm yam yeeb nkab ntaub ntawv, yuav tsum tau cim nrog nominal txoj kab uas hla "DN" (xws li DN15, DN20).
De mas yog hais txog lub sab nraud ntawm cov yeeb nkab
Kev siv dav dav ntawm De labeling, yuav tsum tau sau rau hauv daim ntawv ntawm sab nraud X phab ntsa thickness;
Feem ntau yog siv los piav qhia:seamless steel yeeb nkab, PVC thiab lwm cov kav dej yas, thiab lwm cov kav dej uas yuav tsum tau muaj cov phab ntsa ntshiab.
Siv galvanized welded steel yeeb nkab ua piv txwv, nrog DN, De ob txoj kev sau npe yog raws li hauv qab no:
DN20 De25 × 2.5mm
DN25 De32 × 3mm
DN32 De40 × 4mm
DN40 De 50 × 4mm
......
D feem ntau yog hais txog lub puab txoj kab uas hla ntawm cov yeeb nkab, d qhia lub puab txoj kab uas hla ntawm lub pob zeb, thiab Φ qhia lub cheeb ntawm ib tug zoo tib yam lub voj voog.
Φ kuj tseem tuaj yeem qhia txog lub cheeb ntawm cov yeeb nkab, tab sis tom qab ntawd nws yuav tsum tau muab faib ua phab ntsa tuab.
Piv txwv li, Φ25 × 3 txhais tau hais tias ib lub yeeb nkab nrog sab nraud txoj kab uas hla ntawm 25 hli thiab phab ntsa thickness ntawm 3 hli.
Seamless steel yeeb nkab lossis cov yeeb nkab tsis-ferrous hlau, yuav tsum tau cim "sab nraud × phab ntsa thickness".
Piv txwv li: Φ107 × 4, qhov twg Φ tuaj yeem raug tshem tawm.
Tuam Tshoj, ISO thiab Nyiv ib feem ntawm cov yeeb nkab steel ntawv siv cov phab ntsa tuab qhov ntev los qhia cov phab ntsa tuab ntawm cov yeeb nkab steel series. Rau hom steel yeeb nkab no, txoj kev qhia rau cov yeeb nkab sab nraud txoj kab uas hla × phab ntsa thickness. Piv txwv li: Φ60.5 × 3.8
De, DN, d, ф ntawm ntau yam kev qhia!
De-- PPR, PE yeeb nkab, polypropylene yeeb nkab OD
DN - polyethylene (PVC) yeeb nkab, cam khwb cia hlau yeeb nkab, steel-yas composite yeeb nkab, galvanized steel yeeb nkab nominal txoj kab uas hla
d - cov yeeb nkab nominal txoj kab uas hla
ф - seamless steel yeeb nkab nominal txoj kab uas hla
Post lub sij hawm: Jan-10-2025
