1. Ua thiab vuam mloog
Rau qhov no, ua ntej welding, txhua yam xeb, txhua yam roj thiab dej noo ntawm cov yeeb nkab steel yuav tsum tau muab tshem tawm, thiab cov hlau txuas siv yuav tsum siv xaiv.
2. Vuam ntawm cov kav hlau uas xav tau khoov
Lub sijhawm no, qhov teeb meem uas peb yuav tsum paub yog tias cov phaj tuab tuaj yeem khoov li ntawm 180 degrees, tab sis thaum siv cov khoom siv hlau tsis muaj steel welded yeeb nkab, nws yog qhov zoo tshaj plaws los xaiv cov yeeb nkab steel lossis hlau phaj uas zoo dua li ob zaug ntawm cov tuab. Qhov zoo ntawm qhov no yog tias nws tuaj yeem txo qhov khoov. Tawg ntawm lub ntsej muag.
Peb, xyuam xim rau hauv kev txias txias kos duab ua cov txheej txheem
Nyob rau hauv kev ua cov txheej txheem no, cov kev ua kom sov yog qhov ntau dua yuav tsum tau tsim tawm. Rau cov teeb meem zoo li no, steel kav nrog lub siab zoo dua thiab kub thaum tshav kub kub yuav tsum tau siv. Tom qab tsim cov txheej txheem tiav, cov roj pleev rau saum npoo yuav tsum tau muab tshem tawm.
