1. Cross-linked polyethylene yeeb nkab (PEX) Feem ntau hais lus, cov khoom no yog welded los ntawm tshav kub fusion. Qhov zoo ntawm PEX yeeb nkab yog qhov zoo ntawm kev ua haujlwm siab thiab qhov kub thiab txias ntau yam, los ntawm rho tawm 70 ° txog 95 ° C, thiab tuaj yeem tiv taus qhov kub ntawm 110 ° C rau lub sijhawm luv luv. PEX yeeb nkab tiv taus cov kua qaub thiab alkali corrosion, tuaj yeem siv rau kev thauj mus los ntawm ntau yam tshuaj lom neeg, thiab muaj kev kub siab ua haujlwm zoo thiab kev ua haujlwm kub. Cov phab ntsa sab hauv thiab sab nrauv ntawm lub raj yog du, tsis muaj kev tiv thaiv thiab tsis muaj fouling. Ntxuav thiab tsis muaj kuab paug, nws tuaj yeem cawm tib neeg los ntawm kev hais "dej daj" thiab "dej xeb"
2. Cov yeeb nkab PEX siv cov yeeb nkab tshwj xeeb, uas tuaj yeem ntsia tau yooj yim thiab nrawm yam tsis muaj tapping, buckling lossis vuam. Nws yog ib qho yooj yim rau khoov, mos thiab nruj, txuag cov yeeb nkab fittings, lub teeb hauv qhov hnyav, thiab qhov ntev ntawm cov yeeb nkab tsuas yog ib feem kaum ntawm cov yeeb nkab steel galvanized. PEX yeeb nkab kuj muaj cov rwb thaiv tsev zoo thiab ua haujlwm ntev. Nyob rau hauv ib puag ncig ntawm 70 degree, kev ua haujlwm siab tsawg dua lossis sib npaug ntawm 0.8MPa, thiab lub neej ua haujlwm txuas ntxiv yog 50 xyoo. Txawm li cas los xij, nws muaj qhov tsis zoo ntawm kev tsis raug thermally fused, uas txwv nws cov ntawv thov ntau yam hauv HVAC thiab dej.
