... grating flooring walkway, platform and steel structures, stair tread, well cover, trench cover, compound gratings, storage shelves, ladder, fences and handrail so ... Pitch (center to center):12.5, 15,25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60 ... also available <1'' x 3/16'', 1 1/4'' x 3/16'', 1-1/2'' x 3/16'', 1'' x 1/4'', 1 ...