... (Load Bar) Specifications (mm): The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x 10 ... 7 x 4, 75 x 7 x 4, etc. 2) Bearing Bar Pitch (center to center): 12.5, 15, 25, ... , 100 mm etc, also be according to client's requirement and 30, 40, 60mm are recommended, America standard is available ... /4'', 1 1/2'' x 1/4''(19-w-4) and so on. > 4) Material: Mild Steel (Low Carbon Steel) ...