0.5mm to 8mm electro galvanized steel grating 1.Material:steel 2.bearing bar pitch:30-90mm 3.cross bar pitch:50-100mm electro ... galvanized steel gratingExample:Bearing bar: 40x4, PLAINPitch: 38/38 center to centerDimension: 1x6 ... , 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard: 1"x3/16", 1 ...