... 30days 4.Availability:20,000tons/year pavement gratingUnique features:Light weight, heavy-duty, large loading-bearing capacity, economical ... clean and installation, durable etc.Application:sidewalk, pavement, floor, structure paltformType:W--welded steel grating L-- pressure-locked ... . If any enquiries, please contact us. outdoor floor steel grating_ditch covers,HDG steel grating,drainage cover,sidewalk ...