... platform, corridor bridge, well covers, stairs,etc steel frame lattice Steel grating is made of flat steel and bars by welding with certain distances ... dipped zinc coating gives the product excellent anti-corrosion resistance. Steel grating is widely used in the platform, corridor, bridge, well ... /60/50G455/60/50G505/60/50G555/60/50G605/60/50 steel frame lattice(Manufacturer/ISO)