... grating , serrated, plain, I bar, ISO9001, GRATING SPECIALIST! Mr. David industrial flooring bar grating ,flooring metal grating , flooring grating steel ,ISO9001 ... structures, stair tread, well cover, trench cover, compound gratings, storage shelves, ladder, fences and handrail so on for construction project ... ,Germany: DIN24537-1-2006, Japan: JIS (Mr. David Huang) industrial flooring bar grating