1. Cov neeg kho tshuab kev ntseeg siab, tsis tshua muaj suab nrov thiab kev co me me.
2. Kev lag luam, tag nrho cov nqi ntawm cov cuab yeej siv, kev ua haujlwm, kev saib xyuas thiab kev tswj xyuas yuav tsum raug txiav txim siab.
3. Cov qauv xaiv thiab kev ua tau zoo raws li qhov yuav tsum tau ua ntawm cov txheej txheem tsis xws li cov cuab yeej ntws, lub taub hau, siab, kub, cavitation ntws, nqus nqa, thiab lwm yam.
4. Yuav tsum ua kom tau raws li qhov xav tau ntawm cov yam ntxwv nruab nrab.
1) Rau cov twj uas thauj cov nplaim taws, tawg, muaj kuab lom lossis muaj txiaj ntsig tshaj tawm, yuav tsum muaj cov ntsaws ruaj ruaj ruaj ruaj lossis cov twj tso kua mis tsis muaj paug, xws li cov twj sib nqus tsav, cov twj diaphragm, thiab cov twj tso kua mis.
2) Rau cov twj uas thauj corrosive media, cov khoom siv convection yuav tsum tau ua los ntawm cov khoom siv corrosion-resistant, xws li cov twj yas. Yog tias qhov corrosiveness tsis muaj zog, engineering yas twj tuaj yeem siv raws li qhov tsim nyog.
3) Rau lub twj tso kua mis uas thauj cov khoom nruab nrab uas muaj cov khoom sib txuas, cov khoom sib txuas yuav tsum tau ua los ntawm cov khoom siv corrosion-resistant thiab hnav-resistant, thiab lub foob foob yog flushed nrog dej huv yog tias tsim nyog.
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