** 1. Dab tsi yog phab ntsa tuab ntawm teem sijhawm 40 yeeb nkab steel? **
Phab ntsa tuab rau kev teem sijhawm 40 yeeb nkab tsis yog tus nqi nkaus xwb; Nws sib txawv ua ke nrog cov yeeb nkab nas loj (nps). Piv txwv li, teem sijhawm 40 rau 1-inch NPS Yeeb Nkab muaj lub phab ntsa tuab ntawm 3.38 MM (0.13 nti (nws yog 9.53 hli (0.375 nti).
** 2. Dab tsi yog qhov tseeb sab nraud ntawm ib 8 nti 200 hli steel yeeb nkab? **
Qhov tiag tiag sab nraud ntawm lub cheeb (OD) ntawm ib qho 8-inch nominal cov yeeb nkab yog 219.1 hli. Qhov no yog vim 8-nti cov npe hu ncaj qha rau hauv tus metric DN ncaj qha rau tus metric 200 (thiab ob qho tib si muaj qauv sab nraud ntawm 219.1 malimeters.
** 3. Dab tsi yog phab ntsa tuab ntawm 12 steel yeeb nkab? **
Piv txwv tias "12 tus yeeb nkab steel" yog hais txog 12-nti Rau lwm lub sijhawm, cov tuab yuav sib txawv (piv txwv, sijhawm 80 yog 17.48 hli).
** 4. Dab tsi yog qhov tuab ntawm 250 hli yeeb nkab? **
Lub yeeb nkab 250 hli hais txog qhov metric DN 250 loj, uas sib haum rau 10-inch NPS yeeb nkab. Rau cov sij hawm txheem 40, phab ntsa tuab yog 9.27 hli (0.365 nti). Lub thickness yuav muaj ntau dua rau cov caij nyoog zoo li 80 lossis 160.
** 5. Dab tsi yog tus qauv tuab ntawm cov phab ntsa sab nraud hauv hli? **
Lo lus "sab nraud phab ntsa" tsis yog qauv. Yog tias koj tab tom hais txog lub phab ntsa tuab ntawm cov qauv hlau qauv hlau, tsis muaj tus nqi nkaus xwb. Tus txheej txheem feem ntau yog teem sijhawm 40, nws lub phab ntsa tuab hauv millimeters nyob rau ntawm kwv yees li 2.7 4}} nti tshiab rau ntau dua 12,7 xyoo. 12.7 hli tuab).
