1. Kev tu cev zoo. Cov khoom siv raw ntawm cov kav dej belongs rau polyolefin, thiab nws cov molecules tsuas yog tsim los ntawm C thiab H ntsiab lus. Cov khoom siv raw thiab cov khoom pabcuam tau ua tiav raws li cov qauv kev tu cev, muaj kev tiv thaiv corrosion zoo, thiab tsis muaj tshuaj lom neeg rau tag nrho cov ions hauv dej thiab yuav tsis xeb.
2. Cov kav dej me me tsis kam. Lub puab phab ntsa ntawm cov yeeb nkab ncaj yog du thiab yuav tsis scale. Qhov kev sib txhuam tsis sib haum ntawm txoj kev txhuas yog me dua li ntawm lub thawv yeeb nkab, tus ntoo khaub lig -sectional cheeb tsam tseem me me thaum cov yeeb nkab fittings txuas, thiab cov coefficient hauv cheeb tsam kuj me dua ntawm cov yeeb nkab hlau.
3. Cov khib nyiab ntawm cov kav dej thiab cov yeeb nkab fittings tuaj yeem rov ua dua. Tom qab ntxuav thiab crushing, cov khib nyiab tuaj yeem siv ncaj qha los tsim cov kav dej thiab cov yeeb nkab fittings; Tsis muaj kuab paug rau ib puag ncig thaum lub sij hawm tsim khoom thiab kev tsim kho Nws belongs rau ntug xim tsev cov ntaub ntawv.
4. Kev txuag hluav taws xob thiab txuag hluav taws xob. Lub thermal conductivity ntawm PPR yeeb nkab khoom yog 0.21 w / (mk), uas tsuas yog 1/200 ntawm cov yeeb nkab steel. Feem ntau, thaum thermal rwb thaiv tsev yuav tsum tau rau cov kav dej kub, cov nyhuv ntawm kev tiv thaiv overflow thiab txuag hluav taws xob yog pom tseeb; Lub zog nthuav dav tsim tawm thaum Ju degree hloov me me, uas yog tsim rau faus ncaj qha thiab zais tso rau hauv phab ntsa thiab hauv pem teb txheej txheej.
5. Qhov tsis zoo ntawm cov kav dej PPR: A. rigidity thiab kev cuam tshuam tsis zoo yog qhov phem dua li cov kav hlau hlau, yog li lawv yooj yim rau kev puas tsuaj thaum khaws cia, kev thauj mus los thiab kev tsim kho. b. Lub linear expansion coefficient ntawm PPR yeeb nkab yog loj, xws li ntawm 0.14 mm / (mk) 0.16 (mk). Nws yog ib advisable mus siv concealed nteg. Kev ntsuas los tiv thaiv cov yeeb nkab nthuav dav thiab deformation yuav tsum tau ua thaum raug teeb tsa lossis tsis ncaj qha faus qhov chaw zais.
6. Kev ua haujlwm kub zoo thiab ua haujlwm ntev. PPR yeeb nkab yog qib siab, thiab kev ua haujlwm kub tuaj yeem ncav cuag 95 degree. Nyob rau hauv lub siab ntawm 1.0MPa, qhov ntev -lub sij hawm kev pab kub kub yog 70 degree Raws li lub siab txwv kub ntawm cov dej kub. Ua haujlwm siab PN1 Nyob rau hauv cov xwm txheej ntawm 0mpa, lub neej kev pabcuam tuaj yeem ncav cuag ntau tshaj 50 xyoo; nyob rau hauv qhov kub thiab txias, lub neej kev pab cuam tuaj yeem ncav cuag ntau tshaj 100 xyoo.
7. Yooj yim installation thiab txhim khu kev qha kev sib txuas. Cov txheej txheem ntau lawm yog qhov yooj yim, cov cuab yeej siv peev me me, thiab qhov zoo yog lub teeb. Qhov hnyav tsuas yog 1/9 ntawm cov yeeb nkab steel thiab 1/10 ntawm cov yeeb nkab yeeb nkab, uas txo qhov kev siv ntawm cov neeg ua haujlwm; Raws li cov khoom siv yeeb nkab tau ua tiav thiab tsim nrog peb hom raw khoom. Nws muaj qhov kub zoo - melt function, yooj yim thiab txhim khu kev qha installation, thiab lub zog ntawm qhov txuas yog ntau dua li ntawm cov yeeb nkab ntoo lub cev.
