... , 15, 30, 40, 60mm etc, also be according to client's r Plain steel grating is one of the most widely used ... , 15, 30, 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 steel or ...