Cov ncej fais fab, feem ntau hu ua overhead kab ncej lossis cov ncej fais fab hauv kev lag luam hluav taws xob, yog qhov tseem ceeb ntawm kev txhawb nqa thiab kho cov cuab yeej hauv kev xa hluav taws xob thiab cov kab xa tawm. Lawv yog tsim los rau siab zog thiab corrosion kuj, yooj yim rau nruab thiab tswj, thiab tuaj yeem tiv taus ntau yam kev nyab xeeb thiab kev cuam tshuam ib puag ncig, ua kom muaj kev ruaj ntseg thiab kev nyab xeeb ntawm kev xa hluav taws xob thiab kev faib tawm.
Hauv kev tsim hluav taws xob hluav taws xob, cov ncej hluav taws xob ua lub luag haujlwm tseem ceeb, muab kev txhawb nqa lub cev tsim nyog rau kev xa hluav taws xob thiab kev faib tawm. Tsis tas li ntawd, cov ncej hluav taws xob muaj ntau lwm lub npe, xws li cov kab hluav taws xob siv rau kev txhim kho cov kab hluav taws xob, thiab cov kab hluav taws xob siv rau kev teeb tsa teeb pom kev zoo, cov khoom siv teeb liab, thiab cov teeb pom kev zoo. Thaum siv cov ncej fais fab, cov qauv tseem ceeb hauv lub tebchaws thiab cov lus qhia tshwj xeeb yuav tsum tau ua raws li, suav nrog cov khoom siv, cov qauv kev sim, cov qauv tsim, thiab cov qauv tsim qauv, kom ntseeg tau tias qhov zoo thiab kev nyab xeeb ntawm cov ncej fais fab.
