Feem ntau, tsis muaj cov cuab yeej kuaj thiab cov kev kuaj mob. Peb tuaj yeem txheeb xyuas qhov zoo ntawm PVC steel hlau kav raws li lub zeem muag, tsis hnov tsw, kov thiab lwm yam kev xav.
1. Saib seb lub lumen tsis tu ncua thiab cov phab ntsa tuab yog sib xws. Cov kab noj hniav sab hauv thiab sab nrauv ntawm cov khoom zoo PVC steel hlau kav yog cov qauv ncig, thiab cov phab ntsa ntawm cov yeeb nkab annular yog sib npaug. Siv cov PVC steel hlau yeeb nkab nrog ib txoj kab uas hla ntawm 89 hli thiab phab ntsa thickness ntawm 7 hli ua piv txwv, qhov tuab ntawm phab ntsa ntawm cov yeeb nkab tsis zoo tuaj yeem ncav cuag 7.5 hli thiab qhov nyias nyias tsuas yog 5.5 hli. Thaum ua haujlwm nyob rau hauv kev kub siab, kev ntxhov siab tsis sib xws ntawm cov yeeb nkab phab ntsa tuaj yeem yooj yim ua rau PVC steel hlau yeeb nkab tawg lossis deform, cuam tshuam rau kev siv ib txwm.
2. Saib xyuas seb puas muaj npuas lossis lwm yam khoom pom ntawm phab ntsa ntawm PVC steel hlau yeeb nkab, thiab seb phab ntsa puas muaj xim thiab pob tshab. Lub phab ntsa ntawm high-zoo PVC steel hlau yeeb nkab yog crystal ntshiab thiab tsis muaj impurities. Cov xim daj ntawm cov yeeb nkab PVC steel hlau tsis zoo yuav tshwm sim los ntawm kev tuav tsis raug thaum lub sij hawm tsim khoom, decomposition, laus, los yog lub sij hawm ntev cia.
3. Tsuas yog me ntsis tsis hnov tsw yas, zoo PVC steel hlau yeeb nkab tsis muaj ntxhiab tsw ntawm lwm yam petrochemical khoom. Inferior steel hlau kav muaj ib qho tsis kaj siab thiab pungent diesel tsw, uas ua rau lawv nkag tsis tau, tshwj xeeb tshaj yog nyob rau hauv cov huab cua kub.
4. Cov phab ntsa sab hauv thiab sab nrauv ntawm cov khoom zoo PVC steel hlau kav yog du thiab zoo, thaum cov kav dej tsis zoo yog ntxhib.
5. Thaum ntsuas cov phab ntsa tuab, ob qho kawg ntawm PVC steel hlau yeeb nkab yuav tsum raug txiav tawm, thiab cov yeeb nkab nruab nrab yuav tsum raug xaiv los ua cov qauv rau kev sim. Txhawm rau tiv thaiv qee tus neeg tsim khoom tsis zoo los ntawm kev ua kom muaj kev ntxhov siab ntawm ob qho kawg ntawm cov yeeb nkab, qhov tseeb phab ntsa tuab yog nyias dua li ob qhov kawg ntawm cov yeeb nkab.
6. Txiav ob peb centimeters ntawm cov hlau hlau los ntawm ob qho kawg ntawm PVC steel hlau yeeb nkab, quav cov hlau xaim ntau zaus, thiab sim lub zog thiab lub zog ntawm cov hlau hlau. Cov hlau tsis zoo steel hlau yuav tawg tom qab tsuas yog ib lossis ob lub folds, thaum cov hlau xaim ntawm PVC steel hlau kav yuav tsum muaj cov cuab yeej tshwj xeeb los txiav tawm. Qhov zoo ntawm cov hlau hlau txiav txim siab qhov zoo ntawm tag nrho cov yeeb nkab. PVC steel hlau kav nrog cov teeb meem zoo tshwm sim los ntawm cov hlau xaim yog qhov ua rau irrecoverable deformation.
