1. PB yeeb nkab-PB cov khoom siv tau zoo heev thiab muaj lub koob npe nrov ntawm "yas kub". PB yeeb nkab yog lub teeb nyob rau hauv qhov hnyav, muaj lub siab ua haujlwm zoo, cuam tshuam tsis kam, tsis muaj qhov kub thiab txias ua haujlwm, thiab tuaj yeem siv rau lub sijhawm ntev ntawm 95 degree, nrog kev pabcuam siab tshaj plaws ntawm 110 degree, thiab nws yooj yim yog qhov zoo tshaj plaws. ntawm ob peb feem ntau siv hauv pem teb cua sov kav. Siv cov kev sib txuas kub-kua, qhov sib koom ua ke yog txhim khu kev qha, tab sis tus nqi siab dua vim qhov khoom ntawm qhov khoom. Nws yog qhov kim tshaj plaws ntawm tag nrho cov kav dej.
2. Cov kav dej PEX tuaj yeem suav nrog PEXa thiab PEXc. Lawv muaj qhov kub thiab txias tsis zoo, tiv taus qhov kub siab dua li PPR, muaj kev ntxhov siab zoo tawg, thiab tuaj yeem tiv taus qhov kub siab tshaj 110 degrees. Lawv yog cov zoo tshaj plaws ntawm tag nrho cov yas pem teb cua sov kav. PEX pem teb cua sov kav Nws yog tsis muaj tshuaj lom, tsis qab thiab huv, tsis corrode, tsis yug kab mob, muaj ib tug du sab hauv phab ntsa, thiab tsis cuam tshuam cov dej ntws.
3. Hla-txuas polyethylene aluminium-yas composite yeeb nkab (XPAP)-- cov txheej txheem txhuas nyob rau hauv nruab nrab muaj kev ua haujlwm ntawm oxygen barrier, thiab tseem tuaj yeem txhim kho lub zog sab hauv thiab sab nraud ntawm cov yeeb nkab rau qee yam. Nws tuaj yeem tswj tau nws cov duab tom qab khoov thaum lub sijhawm tsim kho, tab sis lub vojvoog dabtsi yog khoov Loj, delamination tuaj yeem tshwm sim thaum lub sijhawm teeb tsa lossis thaum raug kub hnyiab, thiab tus nqi kuj siab. Nws yog cov yeeb nkab hauv pem teb zoo dua li PEX-A yeeb nkab.
4. PPR yeeb nkab yog tus nqi qis, zoo nyob rau hauv qhov kub thiab txias, thiab tuaj yeem welded, tab sis cov yeeb nkab phab ntsa yog thicker, nws yog ib qho nyuaj rau khoov thaum siv hauv pem teb cua sov, nws muaj zog dua, thiab thermal conductivity tsis zoo.
5. PERT yeeb nkab khaws cia qhov zoo ntawm PPR yeeb nkab ib qho los ntawm ib qho, tab sis tsis muaj kev sib txuas, cov yeeb nkab tseem tuaj yeem txuas nrog kub yaj, kev sib koom ua ke yog txhim khu kev qha, tsis yooj yim rau xau, qhov yooj thiab kub tsis kam kuj yog. zoo, thiab qhov kub tsis kam tsuas yog 70 degrees, yog qhov dav dav PEX series ntawm cov kav dej, lub peev xwm tawg yog 40KG, PEX yog 60KG, qhov yooj yim ntawm pert kav tsis zoo li PEX, thiab nws yooj yim ua rau cov yeeb nkab raug mob. thaum lub sij hawm kev thauj mus los thiab kev tsim kho, uas yuav ua rau muaj kev phom sij rau kev siv cov cua sov hauv pem teb yav tom ntej. PERT kav dej Corrosion kuj, creep kuj, thiab thermal conductivity yog nruab nrab, tsis zoo li PEX kav.
