Lub kaum sab xis hlau
-
Chaw tsim khoom lag luam kev cai kub-dip galvanized lub kaum sab xis hlau
Cov hlau kaum sab xis yog cov hlau carbon rau kev tsim kho. Nws yog ib feem yooj yim ntawm cov hlau seem. Nws feem ntau yog siv rau cov khoom siv hlau thiab lub thav duab ntawm lub chaw ua haujlwm. Nws yuav tsum muaj qhov vuam zoo, yas deformation thiab lub zog kho tshuab thaum siv.