Spiral Steel Stairs
Spiral steel staircases yog ib qho kev xaiv nrov rau cov tsev nyob, cov tsev lag luam thiab cov tsev ntau zaj dab neeg vim lawv cov qauv zoo nkauj thiab niaj hnub.Ua los ntawm cov hlau zoo, cov ntaiv no ruaj khov.Lawv kuj yog ib qho yooj yim los tswj thiab tuaj yeem tiv taus cov tsheb hnyav.Rau cov neeg uas tab tom nrhiav kev xaiv staircase niaj hnub thiab chaw txuag, kauv steel staircases yog qhov kev xaiv zoo.Kauv steel stairs siv qhov chaw hauv pem teb tsawg dua li cov stairs tsoos, ua rau lawv zoo tagnrho rau cov tsev me lossis cov tsev.Lawv tuaj yeem raug kho kom haum rau txhua qhov chaw lossis kev nyiam tsim, txawm tias nws yog lub ces kaum nruj lossis thaj chaw qhib dav.
