Lub ntsiab nta ntawm Ppr Tube

Ntxiv nrog rau cov yam ntxwv dav dav ntawm cov kav dej yas, xws li lub teeb yuag, kev tiv thaiv corrosion, tsis muaj qhov ntsuas, thiab lub neej ua haujlwm ntev, PP-R kav dej kuj muaj cov yam ntxwv tseem ceeb hauv qab no:

1 Tsis muaj tshuaj lom thiab tu cev. Cov khoom siv raw khoom molecules ntawm PP-R tsuas yog carbon thiab hydrogen cov ntsiab lus, thiab tsis muaj teeb meem thiab tshuaj lom. Nws yog tu cev thiab txhim khu kev qha. Nws tsis yog tsuas yog siv hauv cov kav dej kub thiab dej txias, tab sis kuj tseem siv hauv cov dej ntshiab huv.

2 kev txuag hluav taws xob thiab txuag hluav taws xob. Lub thermal conductivity ntawm PP-R yeeb nkab yog 0.21w/mk, uas tsuas yog 1/200 ntawm cov yeeb nkab steel.

3 Kev ua haujlwm kub zoo dua. Vicat softening point ntawm PP-R yeeb nkab yog 131.5 degree. Qhov siab tshaj plaws ua haujlwm kub tuaj yeem ncav cuag 95 degree, uas tuaj yeem ua tau raws li qhov yuav tsum tau muaj ntawm cov dej kub hauv lub tsev dej thiab cov kav dej.

4 Lub neej ua haujlwm ntev. Lub neej kev pab cuam ntawm PP-R yeeb nkab tuaj yeem ncav cuag ntau dua 50 xyoo nyob rau hauv cov xwm txheej ntawm kev ua haujlwm kub ntawm 70 degree thiab ua haujlwm siab (PN) ntawm 1.0MPa (muab cov khoom siv yeeb nkab yuav tsum siab tshaj S3.2 thiab S2.5 series); ntawm chav tsev kub (20 degree) Lub neej kev pabcuam tuaj yeem ncav cuag ntau tshaj 100 xyoo.

5 Ib qho yooj yim installation thiab txhim khu kev qha kev twb kev txuas. PP-R muaj kev vuam zoo. Cov kav dej thiab cov yeeb nkab fittings tuaj yeem txuas nrog kub yaj thiab electrofusion, uas yooj yim rau nruab thiab txhim khu kev qha. Lub zog ntawm qhov sib txuas yog ntau dua li lub zog ntawm cov yeeb nkab nws tus kheej.

6 Cov ntaub ntawv tuaj yeem siv dua. PP-R pov tseg yog ntxuav thiab crushed thiab rov ua dua rau kev tsim cov kav dej thiab fittings. Tus nqi ntawm cov khoom siv rov ua dua tsis pub dhau 10 feem pua ​​​​ntawm tag nrho, uas tsis cuam tshuam rau cov khoom zoo.