Txoj Kev Ua:Cov ntaub ntawv yuav tau extruded los ntawm ntau pawg tshuab kom tsim rau hauv txoj kab ncigtus me nyuam.Nws yog qhov yooj yim kom to taub txog kev ua haujlwm no. Nyob rau hauv txoj kev no, lub yeeb nkab vuam yuav majiermus rau qhov kev kub ceev.
Tom qab ntawv yogVuam:Uantej-galvanized yeeb nkab yog ERW steel yeeb nkab. Hluav taws xob tsis kam vuam (ERW) yog qhov tsis txaus siab qhov twg cov hlau qhov sib chwv tau txuas mus tas li los ntawm cua sov lawv nrog lub xaim hluav taws xob, yaj cov hlau ntawm qhov sib koom tes.
Txog ntawm ntu no, peb muaj qhov zoo loj piv nrog cov me cog.Peb lub Hoobkas siv cov tshuab ua haujlwm vuam tseeb.Tus nqi yog plaub zaug li covkhoom siv dog dig,li ntawdcov khoom tsim tau nrawm dua thiab cov khoom lag luam zoo dua.Thiabpebyuavkho thiab hloov pauv qhov tshiabtshuabhauvasijhawm sijhawm.
Qhov no yog vim li cas feem ntau peb muaj sij hawm luv.
