1. Qhov kub tsis kam ntawm cov yeeb nkab dej kub ppr tuaj yeem ncav cuag 95 degrees, thiab qhov kub ntawm qhov tam sim no yog 110 degrees. Txawm li cas los xij, thaum lub sijhawm ua haujlwm ntev ntawm cov kav dej, nws raug nquahu kom khaws qhov kub ntawm 70 degrees. Yog tias siv cov kav dej txias, qhov kub tsis kam tiv thaiv qis dua, txog 20 degrees. .
2. Cov kav dej ppr sib txawv muaj qhov sib txawv ntawm qhov kub thiab txias. Thaum muas cov kav dej, koj yuav tsum xub nkag siab tias qhov kub ntawm cov kav dej tuaj yeem tiv taus li cas, thiab thaum yuav cov kav dej, koj yuav tsum pom seb cov kav dej kub lossis cov kav dej txias, ob qho tib si tsis pub sib tov, txwv tsis pub cov kav dej yog dej. nquag ua kev puas tsuaj.
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PPR, lossis polypropylene random copolymer, yog cov khoom siv yas siv rau cov dej kub thiab dej txias. Nws yog ib qho muaj zog, ruaj khov, thiab yooj yim rau nruab piping khoom uas tau txais koob meej nyob rau hauv xyoo tas los no. Qhov kub tsis kam ntawm PPR cov kav dej kub yog ib qho tseem ceeb tshaj plaws ntawm lawv cov kev ua tau zoo. Hauv tsab xov xwm no, peb yuav tham txog qhov kub thiab txias ntawm PPR cov kav dej kub, vim li cas nws tseem ceeb, thiab dab tsi cuam tshuam rau nws.
PPR cov kav dej kub yog tsim los tiv thaiv qhov kub thiab txias, ua rau lawv zoo tagnrho rau siv hauv cov dej kub. Qhov kub tsis kam ntawm PPR cov kav dej kub yog feem ntau ntawm 70 degree txog 95 degree, nyob ntawm seb hom thiab qauv. Qhov ntsuas kub no yog nyob ntawm qhov ntsuas kub ntawm cov khoom siv thiab kev ruaj ntseg ntev ntawm cov yeeb nkab. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov kub tsis kam ntawm PPR cov kav dej kub tsis tas li thiab tuaj yeem sib txawv nyob ntawm ntau yam xws li qhov kub thiab txias ntawm cov dej thiab qhov siab ntawm cov dej.
Ib qho ntawm cov laj thawj tseem ceeb vim li cas qhov kub thiab txias yog qhov tseem ceeb rau PPR cov kav dej kub yog los xyuas kom meej lawv cov kav ntev thiab kev ntseeg tau. Nyob rau tib lub sijhawm, qhov kub thiab txias tsis tu ncua tuaj yeem ua rau cov khoom tsis muaj zog thiab ua rau nws tsis ua haujlwm, ua rau cov dej xau thiab lwm yam teeb meem. Qhov no tuaj yeem ua rau raug nqi kho thiab / lossis hloov cov kav dej cuam tshuam. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tau xaiv PPR cov kav dej kub uas muaj qhov kub thiab txias los txo qhov kev pheej hmoo ntawm cov teeb meem no.
Lwm qhov laj thawj vim li cas qhov kub thiab txias yog qhov tseem ceeb rau PPR cov kav dej kub yog ua kom muaj kev nyab xeeb ntawm cov neeg nyob hauv lub tsev. Thaum PPR cov kav dej kub tsis ua haujlwm, lawv tuaj yeem tso cov dej kub thiab chav dej uas tuaj yeem ua rau raug mob hnyav. Qhov no tshwj xeeb tshaj yog muaj kev phom sij nyob rau hauv cov tsev uas muaj menyuam yaus, cov neeg laus, thiab cov neeg uas tsis muaj kev txav mus los. Yog li ntawd, nws yog ib qho tseem ceeb heev uas yuav tau xaiv PPR cov kav dej kub uas muaj qhov kub thiab txias los txo qhov kev pheej hmoo ntawm qhov tshwm sim.
Ntau yam tuaj yeem cuam tshuam qhov kub thiab txias ntawm PPR cov kav dej kub. Cov no suav nrog qhov tuab ntawm cov kav dej, qhov zoo ntawm cov khoom siv, thiab cov txheej txheem tsim khoom. Cov kav dej tuab feem ntau muaj qhov kub thiab txias dua li cov kav dej nyias vim tias lawv tuaj yeem tiv taus cua sov zoo dua. Qhov zoo ntawm cov ntaub ntawv siv kuj tseem ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab qhov kub thiab txias ntawm PPR cov kav dej kub. Cov ntaub ntawv tsis zoo tuaj yeem degrade sai dua nyob rau hauv qhov kub thiab txias, ua rau cov yeeb nkab tsis ua haujlwm. Cov txheej txheem tsim khoom kuj tuaj yeem cuam tshuam qhov kub thiab txias ntawm PPR cov kav dej kub. Cov kav dej uas tsis zoo tsim tau tuaj yeem muaj qhov tsis muaj zog uas muaj kev cuam tshuam ntau dua rau kev ua tsis tiav hauv qhov kub siab.
Hauv kev xaus, qhov kub tsis kam ntawm PPR cov kav dej kub yog qhov tseem ceeb hauv kev xaiv cov khoom siv rau cov kav dej kub. Nws yog ib qho tseem ceeb uas yuav tsum xaiv cov kav dej uas muaj qhov kub thiab txias los xyuas kom meej tias lawv cov kav ntev thiab kev ntseeg siab, nrog rau kev ua kom muaj kev nyab xeeb ntawm cov neeg nyob hauv lub tsev. Qhov kub tsis kam ntawm PPR cov kav dej kub tuaj yeem cuam tshuam los ntawm cov khoom xws li lub thickness ntawm cov kav dej, qhov zoo ntawm cov khoom siv, thiab cov txheej txheem tsim khoom. Thaum xaiv PPR cov kav dej kub, nws yog ib qho tseem ceeb uas yuav tau xav txog cov xwm txheej no thiab xaiv cov khoom lag luam txhim khu kev qha nrog cov ntaub ntawv pov thawj.
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