PVC - Polyvinyl Chloride
Lub kav dej tseem ceeb txij li xyoo 1960, PVC yog cov kav dej yas siv ntau tshaj plaws hauv kev lag luam kav dej thiab kev tsim kho. Hauv Teb Chaws Asmeskas, PVC yog tsim los ntawm cov nkev thiab ntsev (yog, "ntsev"). PVC yog corrosion-resistant thiab dav txais los ntawm lub tsev lis dej num rau feem ntau piping daim ntaub ntawv (tshwj tsis yog dej kub).
CPVC - Chlorinated Poly (Vinyl Chloride)
CPVC yog cov ntawv luv uas siv los piav txog cov khoom siv hluavtaws hu ua Chlorinated Polyvinyl Chloride. Chlorinated Polyvinyl Chloride (CPVC) yog cov tshuaj tiv thaiv ntxiv ntawm polyvinyl chloride (PVC) thiab qhia ob peb qhov tseem ceeb zoo sib xws thiab qhov sib txawv rau cov yas siv dav. CPVC yog cov khoom siv polymer thiab cov yas uas nquag siv hauv kev tsim cov kav dej thiab cov kav dej, cov ntaub ntawv, cov khoom siv, thiab cov khoom siv tshuaj tiv thaiv.
PEX - Hla-txuas polyethylene
PEX yog cov khoom siv yas hloov tau ua los ntawm cov khoom nruab nrab-los yog high-density polyethylene. PEX piping tau siv rau hauv cov dej kub thiab dej txias thiab rau cov cua sov hydronic radiant hauv Europe tau ntau xyoo. Taw qhia rau Asmeskas hauv xyoo 1980s, PEX yog cov kav dej siv tau yooj yim tshaj plaws rau cov kav dej thiab cov cua sov hauv pem teb. Vim nws qhov yooj yim, nws yog ib qho kev xaiv nrov rau kev kho dua tshiab vim tias nws tuaj yeem yooj yim nab los ntawm phab ntsa. PEX tubing tau lees paub tias yog siv tau rau cov kav dej xa dej hauv txhua tus qauv kav dej loj. Kawm txog cov txheej txheem tsim PEX.
