By means of pressure, press locked steel gratings press the cross bar (usually flat bar) into the bearing bars. With the advantages of attractive appearance and lightness & convenience, press locked steel grating is widely used in residential and commercial buildings, theaters, subway, municipal engineering, and which is the ideal construction materials for ceilings, indoor and outdoor decoration, overhead walkway, advertising plaque.Application: widely applied to underground, urban construction, port, theatre, and other places that needs large loading-bearing capacity.