
1. Cov khoom txhais thiab cov ntsiab lus tseem ceeb
Pip (Pre6 - insulated huab cua ducts uas yog cov Hoobkas sib xyaw ua ke, cov khoom siv rwb thaiv tsev, thiab txheej txheej tiv thaiv. Lawv tsis tas yuav tsum muaj kev txhim kho theem nrab ntawm lub xaib thiab feem ntau yog siv hauv cov tshuab HVAC, huv si Rhiav chav cua, Kev lag luam pov tseg kom zoo, thiab lwm yam xwm txheej.
2. Cov ntsiab lus tseem ceeb

Zog - txuag thiab txuag heev:
Cov qauv kev sib tham ua ke txo cov khaub thuas / tshav kub poob, txo cov txheej txheem kev ua haujlwm ntawm lub zog siv los ntawm 20%, ua raws li lub teb chaws "Zog siv tau cov tsev".

Isti - corrosion thiab anti -} mitensation:
Dual kev tiv thaiv ntawm puab galvanized txheej thiab txheej tiv thaiv kev tiv thaiv kom tsis txhob muaj kev xeb ntawm cov huab cua ntawm cov phab ntsa sab nraud, txo cov nqi kho.

Cov huab cua siab nruj:
Lub Hoobkas - Cov Khoom Ua Ntej Ua Ntej yog ob peb, nrog rau 0.5% (nyob deb dua 2%
Cim npe nrov: Pid ua ntej -} insulated ductulated duct, Suav, cov neeg muag khoom, chaw tsim khoom, Hoobkas, Mekas
