Ntawm no yog muaj txiaj ntsig zoo rau kev txhim kho hollow hlau qhov rooj, txawm li cas rau kev tsim kho tshiab lossis vim li cas peb tab tom ua kom nrov rau ob qho tib si sab hauv thiab sab nrauv siv. Cov txiaj ntsig no suav nrog:
Txij Nkawm:Hollow hlau qhov rooj yog tsawg heev-txij nkawm. Coob leej, tshwj xeeb yog ua los ntawm galvanized steel rau corrosion tsis kam, yuav tsum tsis muaj kev saib xyuas txhua.
Qhov ruaj khov:Hollow hlau lub qhov rooj yuav ntev ntev li cov ntoo ntoo lossis lwm hom qhov rooj. Lawv kuj yog cov tseem muaj kev puas tsuaj rau kev cuam tshuam kev puas tsuaj, hnav thiab kua muag thiab steel hlau hollow hlau qhov rooj, xeb. Qhov no ua rau lawv zoo rau qee lub sij hawm nyuaj ib puag ncig xws li cov tsev kawm ntawv thiab tsev kho mob.
Rwb thaiv tsev:Hollow hlau qhov rooj muaj cov khoom insulated, cov chav nyob nrog cov chav hlau hollow yuav pom cov nqi nyiaj tseem ceeb nrog kev hwm rau lub zog.
Kev Nyab Xeeb Kev Nyab Xeeb:Hollow hlau lub qhov rooj yog feem ntau tsis yog qhov tsis muaj zog. Lawv yuav tsis hlawv li ntoo cov qhov rooj lossis txawm yaj kom sai li sai li ntawm cov qhov rooj hlau.
Lub Hnav Tsho:Qhov tseeb tias cov qhov rooj no yog lub teeb ci txhais tau tias siv siv cov qhov rooj hlau hollow yuav ua tiav sai dua thiab yooj yim.
Yog tias koj xav paub ntau ntxiv txog peb cov khoom lag luam hluav taws rooj tua hluav taws
