... grating , serrated, plain, I bar, ISO9001, GRATING SPECIALIST! Mr. David industrial flooring bar grating ,flooring metal grating , flooring grating steel ,ISO9001 ... project, oil project, seaport, power plant, water plant, defense project, chemical factory and so on.We produce three kinds of steel gratings ... -1985,Germany: DIN24537-1-2006, Japan: JIS (Mr. David Huang) industrial flooring bar grating