Qhov A ntawm cov yeeb nkab thiab cov lus siv: nominal diameter (DN) thiab yuav ua li cas cov yeeb nkab thermoplastic loj tau cim npe, piav qhia rau cov neeg yuav thiab cov neeg teeb tsa yeeb nkab.

01. Qhov dav nominal (DN):
Qhov dav ib txwm ntawm lub raj hauv ib qho system raj thermoplastic, qhia qhov loj ntawm sab hauv thiab sab nraud ntawm lub raj lossis txog qhov nws yog.
02. Kev ruaj khov ntawm kev khoov ncig / Kev ruaj khov ncig ncig:
Nws yog seb lub raj puas tiv taus kev nthuav dav ib ncig nws lub voj voog zoo npaum li cas. Koj tuaj yeem txheeb xyuas qhov no los ntawm kev sim lossis suav, thiab nws ntsuas hauv N/m² lossis kN/m².
03. Tus nqi hloov ntawm txoj kab uas hla elastic:
Qhov piv ntawm qhov dav ntawm lub raj uas hloov pauv ncaj qha mus rau qhov dav ntawm lub raj nruab nrab axis ua ntej thauj khoom. Nws qhia ua feem pua thiab pom tau siv kev sim nias.
04. Roundness:
Qhov sib txawv ntawm qhov loj tshaj thiab qhov me tshaj plaws sab nraud ntsuas ntawm tib qho cross-section ntawm lub raj.
05. Standard Size Ratio (SDR):
Qhov piv ntawm qhov dav sab nraud ntawm lub raj rau nws phab ntsa tuab. SDR = DN / en.
06. Siab Ua Haujlwm Siab Tshaj (MOP):
Qhov siab tshaj plaws uas cov kav dej tuaj yeem tswj tau txhua hnub, ntsuas hauv MPa.
07. Phab ntsa tuab npe:
Qhov tuab ntawm phab ntsa ntawm cov khoom raj, ntsuas hauv millimeters.
08. Tag nrho Kev Siv (Tsim) Coefficient C:
Ib qho coefficient tag nrho tshaj 1 uas suav nrog cov xwm txheej siv uas tsis tau qhia hauv qhov qis tshaj uas tau kwv yees thiab cov yam ntxwv ntawm cov khoom xws li fittings hauv lub raj dej.
09. Kev kwv yees txog kev ntseeg siab ntawm zog hydraulic ruaj khov (σLPL):
Qhov qis tshaj ntawm kev kwv yees hydraulic zog rau kub T thiab sijhawm t ntawm 97.5% kev ntseeg siab, σLPL = σ(T, T, 0.975), ntsuas hauv MPa.
10. Qhov Muaj Zog Tsawg Tshaj Plaws (MRS):
Tus nqi stress tau txais los ntawm kev puag ncig σLPL ntawm 50-xyoo kev ntseeg siab qis kawg ntawm 20°C mus rau tus naj npawb nyiam tshaj plaws hauv R10 lossis R20 series, ntsuas hauv MPa. Yog tias σLPL tsawg dua 10 MPa, nws raug puag ncig mus rau R10 series; yog tias nws yog 10 MPa lossis ntau dua, nws raug puag ncig mus rau R20 series.