Ob leeg UPVC yeeb nkab thiab PE yeeb nkab yog cov kav dej thermoplastic, lawv muaj ib qho zoo sib xws, tab sis nyob rau hauv yooj. qhov yuav tsum tau ua kom sov. Kuj tseem muaj qhov sib txawv ntawm cov khoom siv xws li kev tiv thaiv kev laus. Tam sim no cov yam ntxwv ntawm UPVC yeeb nkab thiab PE yeeb nkab tau muab piv thiab soj ntsuam raws li hauv qab no:
1. Kev sib piv ntawm UPVC thiab PE kav
Hom Yeeb Nkab Qhov Zoo Qhov Tsis Zoo Qhov Tsis Zoo UPVC yog corrosion resistant, yooj yim mus cuag, pheej yig, thiab tawv. Tsis haum rau kev thauj mus los ntawm cov dej kub, kev xav tau siab rau kev sib koom ua ke siv tshuab thiab lub sijhawm ua kom ntev. HDPE yog lub teeb nyob rau hauv qhov hnyav, muaj zog qaug zog, zoo kub kuj, zoo toughness, thiab zoo saj zawg zog. Vuam xav tau hluav taws xob; mechanical connectors yog kim dua.
Raws li tuaj yeem pom los ntawm cov lus saum toj no, PE yeeb nkab yog kim dua vim tias cov pob qij txha nws txuas, uas txwv thiab cuam tshuam nws daim ntawv thov dav.
2. Linear expansion coefficient ntawm UPVC thiab PE kav
Pipe Linear expansion coefficient a (/0C) UPVC (hard polyvinyl chloride) 6 × 10-5 HDPE (high-density polyvinyl chloride) 18 × 10-5 MDPE (tsawg-density polyvinyl chloride) 16 × 10-5
Nws tuaj yeem pom tias PE yeeb nkab muaj cov coefficient loj ntawm kev nthuav dav dua li UPVC yeeb nkab, yog li nws yuav tsum tau them nyiaj rau hauv kev tsim.
3. Kev sib piv ntawm kev laus tsis kam ntawm UPVC kav
Tsim lub teb chaws ntawm PVC. Kev ntsuam xyuas dav dav ntawm cov kav dej PE yog raws li hauv qab no:
Cov ntsiab lus ntsuam xyuas tus nqi PVC HDPE MDPE Kev laus kuj tus nqi 20 13
Nws tuaj yeem pom los ntawm cov lus saum toj no: nyob rau hauv cov nqe lus ntawm kev laus tsis kam thiab lub zog ntev, PVC yeeb nkab zoo dua PE yeeb nkab; Nyob rau hauv cov nqe lus ntawm daim ntawv puas, PE yog zoo dua li PVC. Raws li rau rollability thiab weldability, nws tsuas yog muaj feem xyuam rau cov txheej txheem installation. Kev thauj mus los, thiab lwm yam, yuav tsum tsis txhob siv los ua qhov taw qhia tseem ceeb rau kev ntsuam xyuas ob qho khoom siv.
4. Kev teeb tsa thiab kev sib txuas ntawm UPVC yeeb nkab thiab PE yeeb nkab
Raws li tau hais ua ntej: txoj kev sib txuas ntawm UPVC yeeb nkab muaj lub qhov (socket) thiab lub nplhaib roj hmab txuas. Rau kev sib txuas kev sib txuas thiab flange kev sib txuas, nws yog qhov tsim nyog los siv lub qhov (socket) roj hmab nplhaib sib txuas rau cov kav dej uas muaj qhov loj dua. Yog tias qhov kev sib txuas yog siv, nws yog qhov nyuaj los xyuas kom meej qhov kev huv huv ntawm cov yeeb nkab sib txuas ua ntej kev sib txuas, tsuas yog cov xuab zeb. Ib lub npuas me me yuav yog qhov kev phom sij zais ntawm lub interface xau. Tsis tas li ntawd, kev sib txuas kuj tseem cuam tshuam los ntawm qhov kub thiab txias, thiab nws nyuaj rau kev tsim sab nraum zoov.
Cov ntaub ntawv kev sib txuas ntawm cov kav dej PE muaj xws li hluav taws xob kub yaj kev sib txuas thiab kub yaj pob tw txuas. Tshwj xeeb tshaj yog rau kev sib txuas hluav taws xob hluav taws xob sib txuas, nws siv lub tes tsho los npog cov pob qij txha ntawm ob lub kav dej, thiab cov hluav taws xob cua sov hauv lub tes tsho yog rhuab kom lub tes tsho thiab ob lub kav dej fuse ua ke. leaks, tab sis lub tes tsho-hom kev sib koom tes yog kim.