Cov txheej txheem ntau lawm ntawm txoj kev tiv thaiv cib pwm muab faib ua cov txheej txheem tseem ceeb hauv qab no: 1. Rau kev txiav, lub phaj steel thiab tav phaj yuav tsum txiav tawm. Lub tshuab txiav txiav txiav yuav raug siv los sib piv ua ntej pib lub tshuab. Nws yog qhov kev xeem zoo rau cov neeg ua haujlwm ntau lawm. Piv txwv li, cov kws tshaj lij uas tau ua ntau lub sijhawm yuav khib ob peb ceg thaum ua rau lawv. Tom qab sib piv cov pwm.
Tom qab ntawd txiav, cov kev txiav thev naus laus zis ntawm pwm yog qhov yooj yim heev, tab sis cov phaj steel yuav tsum yog kom tsis txhob noj cov hlau tsis raug thiab ua rau muaj kev poob ntau dua. Cov khoom siv raw ntawm cov ecological toj roob hauv pes tiv thaiv cib mould yuav siv cov phaj steel, tab sis cov phaj steel tuaj yeem raug xaiv raws li qhov loj me lossis ntau.
Yog tias lawv raug txiav, kom muaj nuj nqis yuav tsum tau suav. Tom qab suav tau tiav, tus tav ntawm cov pwm yuav tsum tau welded rau cov steel phaj ntawm pwm. Tom qab pwm yog welded, sab hauv thiab sab nraud ntawm cov pwm yuav tsum muaj polished du. Tom qab pwm yog polished du, lub puab toj roob hauv pes kev tiv thaiv cov cib ua yuav tau zoo heev. Tom qab tag nrho cov kev tiv thaiv kab tob tob tob tob tob tob tob tob tob tob cib pwm yog tsim tawm, lawv tuaj yeem siv rau hauv ib qho chaw. Txawm hais tias cov txheej txheem ntau lawm ntawm cov pwm yog qhov kev ua haujlwm yooj yim, kev ua haujlwm zoo ntxiv ntxiv rau kev pab ntawm kev siv ceev.
