Rau qee cov neeg ua lag luam luam, cov khoom siv ob npib siv rau kev luam tawm yog qhov teeb meem heev. Yog hais tias tus mob cia tsis txaus, nws yog ib qho yooj yim uas ua rau tawg, xoos, xeb thiab cov zoo li. Yog li yuav ua li cas yuav tsum tau muab ob lub kauj npo, tshwj xeeb tshaj yog yuav ua li cas nrog nws thaum nws los nag.
Nyob rau hauv lub caij ntuj sov, vim lub nag thiab kub, nws yog nquag oxidative xeb. Yog li, nws vam tias feem coob ntawm cov neeg siv tau tuaj yeem khaws cia thiab siv ob npib nyiaj, thiab tsis txhob xeb kom ntau li ntau tau. Hais txog ob zaug coil, nws yog ib qho tsim nyog los qhia kom meej tias qhov saum npoo ntawm ob lub kauj yog adhered nrog ib txheej galvanized. Yog tias cov txheej hauv khib nyiab heev, nws yuav tsis tau raws li SGS environmental standard; tab sis yog hais tias nws yog ib yam nkaus thiab nyias, nws yuav yooj yim oxidize nrog dej lwg me me. Ua haujlwm, ua xeb. Yog li ntawd, qhov chaw sab nrauv muaj ib qho kev cuam tshuam rau kev ceev ntawm ob qho tib si.
Hais txog qhov chaw txias ntawm ob kauj hlo, thov nco ntsoov tias qhov teeb meem ntawm corrosion ntawm galvanized hlau knot tshwm sim tsuas yog nyob rau hauv cov cheeb tsam nrog high humidity (ntau tshaj 70%) ntxiv kub (tshaj 30 degrees Celsius). Tsis tas li ntawd xwb, hauv lub caij ntuj nag, nws tseem ceeb heev rau kev them nqi rau cov av ntawm qhov chaw cob qhia, khoom khib nyiab, thiab chav luam ntawv. Nws raug nquahu kom ntsuas cov nqi ntawv ntawm 8-10 los ntawm cov dej ntom ntom. Feem ntau, phau ntawv sau muaj ntau txoj dej tsis haum tshaj lub hmoov ntawv, thiab tus nqi pH kuj tseem dua. Xyuam xim rau lub xeb ntawm cov hlau hauv phau ntawv cog lus.
Vim li no, cia ib puag ncig ntawm ob kauj kaub yog ib qho tseem ceeb heev, ntev li ntev tau rau ib tus neeg vim li cas thiaj li ua kom tiav qhov chaw ceev ntawm ob zaug.