steel grating bar grating, floor grating, stair treads galvanized and pvc coated factory steel gratingSteel grating is made by welding with flat steel and bars with certain ... product excellent anti-corrosion resistance.Steel grating is widely used in the platform, corridor, bridge, well covers, stairs, fencing for petroleum, chemical, ... /50G455/60/50G500/60/50G555/60/50G605/60/50 steel grating plate