Raws li cov xov hlau thiab cov cables uas muaj zog tsawg, lawv feem ntau muab faib ua ob pawg raws li lawv lub hom phiaj: cov xov hlau tsim kho thiab cov xov hlau khoom siv hluav taws xob. Hauv cov xov hlau tsim kho, nws yog cov roj hmab ntuj tsim uas tau rwb thaiv tsev thiab cov xov hlau asphalt coated thaum ntxov li xyoo 1960. Txij li xyoo 1970, nws tau hloov pauv tag nrho los ntawm cov xov hlau yas PVC. Qhov xwm txheej hauv cov kab khoom siv hluav taws xob zoo ib yam li cov kab tsim kho, uas thawj zaug tau tswj hwm los ntawm cov roj hmab ntuj, tab sis feem ntau tau hloov los ntawm cov cables PVC hauv xyoo 1970. Qhov xwm txheej no tsis yog kev tshawb fawb thiab tsis tsim nyog hauv kev lag luam cable thiab cov neeg siv xaiv. Niaj hnub no, ntau yam cables khoom siv hluav taws xob, tshwj xeeb tshaj yog cov cables txuas uas xav tau rau cov khoom siv hauv tsev uas vam meej, yuav tsum hloov qhov xwm txheej tam sim no ntawm kev tswj hwm los ntawm cov yas PVC thiab hloov lawv nrog cov cables roj hmab. Vim tias cov cables roj hmab muaj cov txiaj ntsig tshwj xeeb xws li mos, zoo tes xis, tsis ntshai cua sov, thiab tsis yaj, lawv tsis muaj qhov sib piv rau cov cables yas. Vim nws muaj ntau yam zoo uas cov roj hmab tsim tsis muaj, CPE tuaj yeem siv dav hauv kev tsim cov xov hlau hluav taws xob hauv tsev thiab lwm cov cables yooj ywm rau cov khoom siv hluav taws xob. CPE muaj cov khoom siv thev naus laus zis dav dav, xws li hluav taws kub zoo heev thiab tiv taus roj, lub cev thiab lub cev (piv txwv li cov khoom siv kho tshuab), tiv taus kub zoo, tiv taus ozone, tiv taus huab cua, hluav taws xob zoo, thiab kev ua haujlwm zoo. Nws tuaj yeem siv rau hauv cov khoom siv ua roj hmab dav dav, thiab cov khoom siv roj hmab tsis yooj yim kub hnyiab. Cov khoom siv raw CPE yuav tsis lwj tom qab ob peb xyoos khaws cia, Cov khoom siv roj hmab nrog cov neeg sawv cev vulcanizing tuaj yeem khaws cia rau 1-2 xyoos yam tsis muaj kev puas tsuaj nyob rau hauv cov xwm txheej khaws cia zoo dua.
Hauv kev xaus lus, kev siv CPE hauv kev lag luam cable online, uas yog, hloov CR nrog CPE, yog ib qho kev hloov pauv hauv kev lag luam cable online. Qhov no tsis yog tsuas yog txo qhov kev tsis sib haum xeeb ntawm kev muab khoom thiab kev thov ntawm CR, txo cov nqi ntawm cov khoom cable, txhim kho cov txiaj ntsig kev lag luam ntawm kev lag luam cable, tab sis kuj muaj qhov tseem ceeb hauv kev txhim kho qib ntawm cov khoom cable thiab ua tiav kev sib txawv ntawm cov cable ntau yam.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-06-2023
