Cov Khoom Siv Hlau
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Cov Khoom Siv Hlau
Lub steel prop yog ib qho khoom siv txhawb nqa uas siv dav rau kev txhawb nqa cov qauv ntsug, uas hloov kho rau kev txhawb nqa ntsug ntawm cov slab formwork ntawm txhua yam duab. Nws yooj yim thiab yoog tau, thiab kev teeb tsa yooj yim, pheej yig thiab siv tau. Lub steel prop siv qhov chaw me me thiab yooj yim rau khaws cia thiab thauj mus los.