... 20 x 3mm up to 90 x 7mm 3)Bearing bar pitch: 30, 40, 60, 12.5 Steel ... hot dipped galvanized steel grating.Description:1. Bearing Bar (Load Bar) Specifications (mm): The specification of plain type and ... serrated type bearing bar is 20 x 3 to 100 x 6; the ... 40, 60mm are recommended, America standard is available.3. Cross Bar Pitch (center to center): 30, 38, 50, 76, ...