Dab tsi yog cov yam ntxwv tsim ua kev nyiam huv, tsis muaj tshuaj lom thiab kub thiab tiv taus PP kav dej
Cov yeeb yaj kiab PP muaj qhov zoo ntawm kev yooj yim thiab ceev tsim, kev lag luam thiab ib puag ncig, lub teeb nyhav, huv thiab tsis muaj kuab lom, zoo thaum tshav kub tsis kam, tiv thaiv corrosion, ua haujlwm zoo rwb thaiv tsev, thiab lub neej ntev. Muaj cov ntau ntawm cov yeeb nkab fittings, tees, lauj tshib, yeeb clamps, reducers, ntsaws yeeb nkab, yeeb nkab clamps, nkhaus, thiab dai. Cov kav dej PP tau muab faib ua cov kav dej txias thiab kub, lub raj xa dej txias yog lub raj ntsuab ntsuab, thiab cov kav dej kub yog lub raj liab liab. UPVC kav dej siv rau kev tso dej tawm ntawm cov kav dej PP. Vim tias lawv lub teeb yuag, kev tiv thaiv corrosion, thiab lub zog muaj zog, lawv tau siv dav hauv cov kav dej txuas. Ua ntej cov yeeb nkab ywj pheej raug rhuav tshem los ntawm kev kub siab, nws tuaj yeem muaj qhov loj deformation, thaum lub yeeb nkab tsis tuaj yeem muaj qhov loj deformation ua ntej nws rhuav tshem los ntawm lub siab sab nraud. Thaum cov yeeb nkab tsis sib haum yog nyob rau sab nraud siab, lub nra yog tag kis los ntawm cov yeeb nkab phab ntsa mus rau hauv qab yeeb nkab txaj, thiab lub caij khoov tuaj yeem tsim rau hauv cov yeeb nkab phab ntsa, raws li lub cheeb ntawm cov yeeb nkab nce.
Lub sijhawm khoov siab thiab kev ntxhov siab ntawm cov yeeb nkab phab ntsa nce ntau zuj zus, yog li ntawd loj-pob zeb ua ke ntawm cov kav dej feem ntau xav tau kev txhawb nqa, thiab cov yeeb nkab uas hloov tau yog deformed ua ntej rhuav tshem los ntawm compression-tom qab kev nthuav dav, cov av rov qab nyob ib ncig ntawm cov yeeb nkab tuaj yeem tiv thaiv qhov hloov tau yeeb nkab Vim hais tias deformation thiab nthuav dav sab nraud, sab nraud load sab nraud yog kis thiab xa mus rau qhov chaw ib puag ncig. Nyob rau hauv tib lub zog sab nraud load, qhov kev ntxhov siab nyob rau hauv cov phab ntsa ntawm lub yeeb nkab uas hloov tau yog qhov me me, thiab nws thiab qhov chaw txuas rov qab tuaj yeem txais lub nra ua ke, thiab PP cov yeeb nkab tseem tuaj yeem ua kom tiav cov nyhuv. Yog li, PP cov yeeb nkab faus cov yeeb yaj kiab tsis tas yuav tsum muaj tib lub zog thiab nruj raws li lub tog raj dej ruaj ruaj, thiab tuaj yeem ua tiav cov ntawv thov kev thov hauv kev tsim nyog txhav. PP kav dej thiab yeeb nkab xov tuaj yeem siv ua dua tshiab thiab siv nyob rau hauv tus txheej txheem ntawm kev hnyav thiab kev tsim kho. Cov khib nyiab tuaj yeem siv ncaj qha rau noj tom qab ntxuav thiab tawg. Nyob rau hauv cov xwm txheej uas qhov infiltration ntawm cov khoom siv rov qab tsis tshaj 10% ntawm tag nrho cov khoom siv raw, qhov zoo yuav tsis cuam tshuam. Kev rov siv khoom ntawm cov khoom nyoos, ntxiv rau kev txo nqi kev noj, yog qhov tseem ceeb heev kom tsis txhob muaj kev cuam tshuam ntawm cov khoom pov tseg ntawm kev saib xyuas ib puag ncig.
