Phau ntawv npauj npaim li qub tuaj yeem tsim los ntawm ntau yam ntaub ntawv, nyob ntawm qhov tshwj xeeb daim ntawv thov thiab cov kev xav tau. Nov yog qee cov ntaub ntawv siv rau phau ntawv npauj npaim li qub:
Cam khwb cia hlau: cam khwb cia hlau yog cov khoom siv nrov rau npauj npaim li qub vim nws cov kav ntev thiab kev siv nyiaj. Nws yog tsim rau cov ntawv thov uas muaj dej, chav dej, thiab cov kua dej tsis muaj corrosive.
Iron Ductile: Cov hlau muaj zog dua thiab tawv dua piv rau cov hlau cam khwb cia. Nws yog feem ntau siv rau hauv cov ntawv thov uas xav tau kev ntsuas siab dua lossis rau kev tuav cov kua dej corrosive.
Carbon Steel: Cov pa roj carbon steel yog cov khoom siv muaj zog tsim nyog rau ntau hom kev lag luam. Nws muab lub zog zoo thiab kev tiv thaiv corrosion, ua rau nws haum rau tuav ntau yam kua xws li dej, roj, thiab roj.
Stainless Hlau: Stainless hlau yog cov khoom siv tiv thaiv corrosion feem ntau siv hauv kev lag luam uas kev huv thiab huv yog qhov tseem ceeb, xws li kev ua zaub mov, tshuaj, thiab tshuaj. Cov qib sib txawv ntawm cov hlau tsis muaj steel (xws li, 304, 316) tuaj yeem siv nyob ntawm cov kua dej thiab cov qib ntawm corrosion kuj yuav tsum tau.
PVC (Polyvinyl Chloride): PVC yog ib yam khoom siv rau cov npauj npaim li qub uas siv rau hauv cov ntawv siv tsis tshua muaj siab uas muaj cov dej thiab cov kua dej tsis muaj zog. Nws yog lub teeb yuag, tus nqi zoo, thiab muaj cov tshuaj lom neeg zoo.
CPVC (Chlorinated Polyvinyl Chloride): CPVC zoo ib yam li PVC tab sis muaj qhov kub thiab txias thiab tshuaj tiv thaiv. Nws yog tsim rau tuav dej kub, acids, thiab lwm yam corrosive kua.
Bronze: Bronze feem ntau siv hauv marine thiab seawater daim ntaub ntawv vim nws zoo heev corrosion kuj. Nws kuj tseem tsim nyog rau cov ntawv thov uas muaj cov kua dej qis.
Lwm cov ntaub ntawv: Raws li cov kev xav tau tshwj xeeb, phau ntawv npauj npaim li qub tuaj yeem tsim tau siv cov ntaub ntawv xws li txhuas, tooj dag, npib tsib xee alloys, thiab cov khoom sib txawv rau cov ntawv tshwj xeeb uas muaj qhov kub thiab txias, corrosive ib puag ncig, lossis kev xav tau kev lag luam tshwj xeeb.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov kev xaiv ntawm cov khoom yog nyob ntawm qhov xwm txheej ntawm cov kua dej, qhov kub thiab txias, siab, tshuaj lom neeg sib raug zoo, thiab ib puag ncig.
