Muaj ntau txoj kev sib txuas rau cov kav dej PPR pom hauv khw. Thov saib cov ntsiab lus hauv qab no:
1: Kev sib txuas ntawm cov khoom yas siv cov khoom yas ntawm cov yeeb nkab fittings (cov yeeb nkab fittings muab faib ua tooj liab thiab cov khoom yas). Thaum cov khoom yas txuas nrog, lawv feem ntau yog welded nrog lub tshav kub yaj. Cov phab ntsa sab nrauv ntawm cov yeeb nkab thiab cov phab ntsa sab hauv ntawm cov yeeb nkab fittings yog melted los ntawm lub tshav kub dissolver tib lub sij hawm. Lub sijhawm no, qhov kub thiab txias yog tib yam, thiab tom qab ntawd lawv tau muab tso ua ke. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias thaum lub sij hawm cov txheej txheem ntxig, lawv yuav tsum tsis txhob tig thiab txav mus los, txhawm rau kom tsis txhob muaj dej ntws tawm vim qhov sib txawv ntawm qhov sib txuas.
2: Cov khoom siv tooj liab txuas nrog. Cov khoom tooj liab muaj cov xov hlau sab hauv thiab sab nraud, uas yog cov xov peb feem ntau pom, uas tuaj yeem ntsia tau ua ke. Thaum txuas nrog cov kav dej, lawv yuav tsum tau muab kaw nrog cov ntaub nplaum nyoos.
3: Qee zaum, peb tuaj yeem siv qhov sib txuas ceev ceev thaum peb ntsib qee qhov kev kho mob xwm txheej ceev. Qhov no tuaj yeem siv tsis muaj hluav taws xob vuam, tab sis tsuas yog siv tau ib ntus xwb. Tau ntev, nws yog qhov zoo dua los siv kub - melting welding.
Muaj ntau txoj hauv kev sib txuas, uas tuaj yeem txiav txim siab raws li qhov sib txawv.
