... -class Italian ORSOGRIL equipment .which can arrange the bearing bar and cross bar in longitude and latitude order to certain distance . ... 30mm, 40mm, 60mmCross bar pitch: 50mm or 100mmSteel Bar Grating: material: Q235A or stainless steel plate, General Specification: 20*3, 25 ... : 5*5,6*6,8*8mm4. Bar grating is widely used in the platform, corridor, bridge, well covers, stairs.5. Ventilation, light ...