... , commonly used for platforms, trench gratings, and stair treads, etc.Features:1) Bearing bar specification: 20 x 3 to 100 ... 40, 60mm etc, also be according to client's requirement and 30, 40, 60mm are recommended3) Cross bar pitch: 38, 50, 76, 100mm, also ... be according to client's requirement and 50, 100mm are recommended4) Material: Mild ...