... capacity, safe , skid-proof, easily fixed and dismantled, economical ,long life and durable, ventilated and penetration of light, easily to be cleaned ... industrial platforms, walkways, docks, drains cover ,the cable trench cover and so on.Our product of steel grating products is in compliance with ... 25, 60, 80mm etcUS standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc. 3Twisted Cross Bar Pitch38 ...