... 4.Easy to install and clean Plug-in Type Steel Grating It is made by a kind of carbon ... theaters, metros or ceilings, indoor and outdoor decoration, pavement, ventilation windows, advertisement boards and different covers. Products Description:1) Bearing Bar ... , America standard is available. 4) Material:Q235A or Stainless Steel 5) Surface Treatment:Untreated, Painting or Hot Dipped Galvanizing 6 ...