... , I bar, ISO9001, GRATING SPECIALIST! Mr. David industrial flooring bar grating ,flooring metal grating , flooring grating steel ,ISO9001-2000, GRATING SPECIALIST, YOUR GRATING ... steel / mill black and hot dip Galvanizing / and stainless grating flooring walkway, platform and steel structures, stair tread, well cover, trench ... , 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm ...