Engineering PPR kav thiab fittings muaj tib lub thermal expansion kev ua tau zoo li lwm yam, uas cuam tshuam rau qhov kub thiab txias tsis kam thiab kev pab lub neej ntawm cov kav dej. Raws li hom tshiab ntawm cov khoom siv yeeb nkab, PPR yeeb nkab tau hloov tag nrho nws cov thermal expansion. PPR yeeb nkab uas tsim los ntawm cov kws tshaj lij kub-kua tshuab ua haujlwm yog tsim rau cov kav dej engineering (txias thiab dej kub engineering). Nws muaj qhov kub thiab txias tsis kam thiab siab ua haujlwm siab. Cov dej siab nyob rau hauv ib txwm kub yog 45 kg / cm2, thiab qhov kub tsis deformation ntawm cov yeeb nkab yog 112 degree.
PPR yeeb nkab txais kev siv tshuab kub fusion hauv dej txias thiab dej kub sib kis engineering. Nws txoj kev ua tau zoo thiab kev lag luam Performance index yog zoo dua li PVC yeeb nkab thiab txhuas -cov yeeb nkab yas sib xyaw. Nws yog ib qho ntawm cov khoom lag luam ntawm cov kav dej xa dej hauv cov teb chaws Europe thiab Asmeskas tsim. Nyob rau hauv cov xwm txheej ntawm lub sijhawm ntev - lub sijhawm ua haujlwm tsis tu ncua dej siab thiab dej kub txog 95 degree, lub neej kev pabcuam tuaj yeem ncav cuag 50 xyoo. Nws muaj nuj nqis los ntawm cov teb chaws thoob plaws ntiaj teb rau nws txoj kev noj qab haus huv zoo, kev tiv thaiv ib puag ncig, kev tiv thaiv tshav kub, ua haujlwm siab, tiv thaiv corrosion, yooj thiab av qeeg,
Lub elastic modulus ntawm PPR pipeline yog tus qauv, thiab qhov Performance index ntawm deformation kuj yog siab dua li ntawm lwm cov kav dej, yog li nws yog tsim nyog rau cov kav dej kub. Carbon qauv composite PPR yeeb nkab fittings kuj yog tus sawv cev ntawm cov kav dej kub resistant.
Qhov qis thermal conductivity ntawm random copolymerized polypropylene yeeb nkab (PPR yeeb nkab) nyob rau hauv PPR yeeb nkab kev lag luam ua rau nws ib tug zoo yeeb nkab tiv thaiv kub. Feem ntau, nws qhov kev ua tau zoo tshaj plaws tuaj yeem pom tau yam tsis muaj cov khoom siv thermal ntxiv.
