... : 20 x 3 to 100 x 62) Bearing bar pitch: 12.5, 15, 30, 40, 60mm etc, also be according to ... one of the most widely used steel gratings. The bearing bar comes in the form of a plain surface flat ... : 20 x 3 to 100 x 62) Bearing bar pitch: 12.5, 15, 30, 40, 60mm etc, also be according to ... client's requirement and 30, 40, 60mm are recommended3) Cross bar ...