5.Txhais cov thickness
Ntxiv rau, koj tuaj yeem siv tus ntsuas pa ntsuas qhov ntsuas kom ntsuas seb cov phab ntsa tuab ntawm cov yeeb nkab ua tau raws li tus qauv thiab yog ib yam zoo ib yam. Feem ntau, cov kav dej zoo tsim tawm nruj raws li lub teb chaws tus qauv, tab sis hom no yuav tsum muaj qee qhov kev nkag siab ntawm lub teb chaws tus qauv rau PP-R kav dej.
6. Mloog lub suab
Lub suab ntawm PP-R yeeb nkab tsaws yog npub, thiab lub suab ntawm pseudo PP-R yeeb nkab tsaws yog qhov pom tseeb dua. 6. Kab Yeeb
Zoo PP-R yeeb nkab tau muab kev coj zoo. Nws yog ib txwm tsis yog PP-R yeeb nkab yog yooj yim tsoo, butyou yuav tsum paub tias txawm tias PP-R yeeb nkab zoo tuaj yeem smashedif qhov kub tau tsawg dua 10 degrees. Lub Thev hardness tsis yog sib npaug nrog kev zoo elasticity. Qee cov tuam ntxhab nce lub qhov tawv los ntawm kev ntxiv cov calcium calciumate ntau dhau thiab lwm cov impurities, thiab nws yuav tsis so, butit yuav nkig tom qab lub sijhawm ntev.
7. Tsis hnov tsw kub nyhiab
Cov yeeb yaj kiab PP-R sib xyaw nrog cov yas siv rov qab thiab lwm cov khoom tsis huv hauv cov khoom nyoos Thaum koj muab tso rau hluav taws nws yuav tawm cov pa luam yeeb dub thiab muaj cov ntxhiab tsw. Tom qab cov khoom siv zoo raug hlawv, nws yuav tsis tawm cov pa luam yeeb dub thiab tsw. Tom qab hlawv, cov kua roj molten tseem huv heev.
8. Txhab
Thaum PP-R yeeb nkab tau welded, lub vuam kub ua haujlwm tsis tu ncua yog nyob hauv thaj tsam ntawm 260-290 ℃, thiab lub vuam zoo yuav zoo tuaj yeem lees paub thaum lub ntsuas kub no. Yog hais tias cov vuam siv tsis siv, cov khoom lag luam tuaj yeem nkag mus rau hauv lub vuam tuag thaum vuam. Thiab vuam kev sib tsoo qog yuav nyob ze rau lub xeev ua kua, qhia tias qhov khoom tsis yog ua los ntawm cov khoom siv PPRraw tseeb, thiab yog hais tias lub vuam tsuam cov qog yuav ua kom sai thiab txias (feem ntau li ntawm 10 vib nas this), nws tseem tuaj yeem qhia tau tias cov khoom tsis yog cov khoom siv PP-R raw khoom. Nws yog tsim vim tias ib qho ntawm cov yam ntxwv ntawm PP-R yog tias nws muaj cov nyhuv kub zoo dua, thiab nws lub ntsuas cua txias yuav ib txwm qeeb qeeb.Thiab xyuas seb lub puab txoj kab uas hla ntawm cov yeeb nkab yog deformed thiab seb cov yeeb nkab fittings yog kos. Lub PPRpipe zoo tsis tuaj yeem kos, thiab lub taub loj tsis yooj yim deformed.