Kev ntsuas hluav taws xob nkag qhov chaw
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Cov khoom siv fais fab fais fab
Cov khoom siv fais fab fais fab cov khoom lag luam. Peb muab cov khoom lag luam rau cov khoom siv fais fab thoob ntiaj teb, suav nrog cov chaw nres tsheb hluav taws xob ntau ntawm cov chaw nres tsheb txuas hluav taws xob txuas, cov cuab yeej siv hluav taws xob cov qauv hluav taws xob Cov khoom lag luam tseem ceeb yog nyob hauv Asmeskas thiab Askiv. Peb tau txhim kho lub zog hluav taws xob txuas rau ntau tshaj 20 xyoo, thiab peb tau tsim pua pua ntawm cov khoom siv fais fab txuas nrog cov khoom siv ntawm txhuas thiab ductile iron.Surface kho koom nrog zinc plating, kub-dip galvanizing, ...
