PVC ductwork yog ib qho khoom siv feem ntau hauv lub tsev ua pa, thiab nws cov nqi sib txawv feem ntau cuam tshuam cov neeg yuav khoom. Tus nqi lag luam ib 'meter' txawv ntawm kaum mus rau pua pua yuan, qhov sib txawv tseem ceeb feem ntau txiav txim siab los ntawm peb yam tseem ceeb.
Thickness yog qhov tseem ceeb ntawm kev txiav txim siab tus nqi.
Feem ntau PVC duct phab ntsa thicknesses li ntawm 1.5mm mus rau 3mm. Rau txhua txhua 0.5 hli nce nyob rau hauv thickness, cov khoom nqi nce los ntawm 15% -20%.
Engineering lees txais cov qauv qhia meej meej qhov tsawg kawg nkaus phab ntsa thickness yuav tsum tau rau cov yeeb nkab diameters sib txawv, uas yuav tsum tau saib xyuas tshwj xeeb thaum lub sij hawm yuav khoom.
Cov kav dej nyias nyias, thaum pheej yig dua, feem ntau ua rau deformation thiab tawg, ua rau cov nqi kho dua tom qab.
Txoj kab uas hla ncaj qha cuam tshuam rau kev siv cov khoom siv.
Piv nrog rau tus qauv 100mm txoj kab uas hla cov yeeb nkab, 500mm txoj kab uas hla cov yeeb nkab yuav tsum tau tsib zaug ntau cov khoom, ib txwm ua rau tus nqi siab dua.
Tshwj xeeb - tshwj xeeb tsis yog- cov kav dej txheem, xav tau kev tsim pwm, yog kwv yees li 30% kim dua li cov kav dej txheem.
Nws raug nquahu kom siv qhov loj me ntawm tus qauv tsim kom ntau li ntau tau los xyuas kom meej lub sijhawm xa khoom thiab tswj cov nqi.
Qhov sib txawv ntawm cov tshuaj additives yuav tsum tsis txhob ignored.
Ordinary PVC ducts feem ntau ua tau tsis zoo nyob rau hauv cov nqe lus ntawm huab cua tsis kam thiab nplaim taws, thaum txhim kho cov khoom nrog ntxiv UV stabilizers thiab nplaim hluav taws kub yog 25% -35% kim dua.
Rau kev siv sab nraum zoov lossis qhov chaw uas muaj kev nyab xeeb hluav taws kub, qhov kev nqis peev ntxiv no yog qhov tseem ceeb.
Qee cov khoom qis- tus nqi qis yuav siv cov khoom siv rov ua dua; Cov kav dej no nquag ua rau brittleness thiab tawg, txo lawv lub neej ntau dua 50%.
Thaum yuav khoom, ntxiv rau kev sib piv cov nqi tsev, cov nqi tsheb thauj mus los thiab cov nqi teeb tsa yuav tsum tau txiav txim siab.
Loj - txoj kab uas hla yuav tsum tau tshwj xeeb hoisting khoom; installation nqi nyob rau hauv qhov chaw kaw tej zaum yuav tshaj cov khoom siv nws tus kheej.
Kev yuav khoom ntau feem ntau muab cov nqi txo ntawm 8-12%, tab sis yuav tsum tau them nyiaj rau cov xwm txheej khaws cia; Kev raug tshav ntev ntev tuaj yeem ua rau cov kav dej PVC deform.
