Tin yog cov hlau uas tau siv dav rau ntau txhiab xyoo, thiab feem ntau suav tias yog ib qho ntawm cov hlau uas pheej yig tshaj plaws. Txawm hais tias nws tus nqi qis, txawm li cas los xij, tin tseem yog ib qho txiaj ntsig zoo thiab muaj ntau yam khoom siv uas tuaj yeem siv rau ntau lub hom phiaj.
Ib qho ntawm cov laj thawj tseem ceeb uas tin yog nrov heev yog nws tus nqi qis. Piv nrog rau lwm yam hlau xws li kub lossis nyiaj, tin yog qhov pheej yig dua, ua rau nws yog qhov kev xaiv nrov rau kev siv txhua yam ntawm lub tsheb mus rau cov kaus poom. Vim tias nws muaj dav heev thiab yooj yim rau kuv, tin tuaj yeem ua rau ntau qhov ntawm tus nqi qis, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov lag luam thiab cov chaw tsim khoom uas xav tau los tsim cov khoom ntau sai thiab pheej yig.
Txawm hais tias nws tus nqi qis, txawm li cas los xij, tin kuj yog ib qho khoom siv zoo kawg uas tuaj yeem siv rau ntau lub hom phiaj. Piv txwv li, tin tau siv ntau pua xyoo los ua txhua yam los ntawm cov khoom siv hauv chav ua noj rau cov khoom siv vov tsev, thiab nws tseem siv dav rau cov hom phiaj niaj hnub no. Tsis tas li ntawd, tin yog tiv taus corrosion thiab oxidation, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv sab nraum zoov xws li laj kab, ru tsev, thiab gutters.
Ntxiv nrog rau nws qhov kev pheej yig thiab muaj txiaj ntsig zoo, tin kuj yog ib qho khoom siv zoo kawg nkaus uas tuaj yeem siv tau ntau yam sib txawv. Piv txwv li, tin tuaj yeem siv los tsim cov alloys nrog lwm cov hlau, muab nws cov khoom tshwj xeeb uas ua rau nws zoo tagnrho rau kev siv ntau yam kev lag luam thiab kev lag luam. Tsis tas li ntawd, tin tuaj yeem tsim rau hauv ntau hom duab thiab ntau thiab tsawg, ua rau nws zoo tagnrho rau kev siv ntau yam khoom sib txawv thiab kev siv.
Zuag qhia tag nrho, thaum tin tej zaum yuav yog ib qho ntawm cov hlau pheej yig tshaj plaws, nws tseem yog ib qho tseem ceeb tshaj plaws thiab ntau yam. Txawm hais tias koj tab tom nrhiav rau cov khoom siv uas tsis tshua muaj nqi rau kev tsim khoom lossis tsuas yog xav coj kom zoo dua ntawm nws cov khoom tshwj xeeb, tin yog cov hlau uas tsim nyog xav txog. Yog li ntawd, yog tias koj xav tau ib qho pheej yig, txhim khu kev qha, thiab muaj txiaj ntsig zoo hlau, saib tsis pub dhau tin.