Cov kav dej yog cov khoom tsim nyog rau kev tsim kho, thiab feem ntau siv yog cov kav dej, cov kav dej, cov kav dej, cov kav dej, cov kav dej, cov kav dej, cov kav dej, cov kav dej nag, thiab lwm yam. txoj kev loj hlob ntawm cov kav hlau cam khwb cia zoo tib yam → cov kav dej cement → cov kav dej txuas ntxiv, cov kav dej asbestos cement → cov kav hlau hlau, cov kav hlau galvanized → cov kav dej yas thiab cov kav dej txhuas-yas sib xyaw.

Muaj ntau yam kev siv cov kav dej, tab sis lawv muaj cov ntaub ntawv sib xws uas yuav tsum tau saib xyuas - cov kab uas hla sab nraud, uas yog ib qho tseem ceeb los xyuas seb cov kav dej puas tsim nyog lossis tsis tsim nyog.Peb lub Hoobkas tau teeb tsa cov cuab yeej tshaj lij los saib xyuas cov ntaub ntawv sab nraud ntawm cov kav dej steel txhua lub sijhawm los xyuas kom meej cov khoom zoo.Peb lub Hoobkas tshwj xeeb hauv kev tsim cov yeeb nkab steel, seamless steel kav, galvanized steel kav, steel phaj, scaffolds thiab scaffold accessories, tsev cog khoom kav, xim coated kav, tshuaj tsuag kav.