... :2000 2.Hot dip galvanized steel grating, bar grating, stair treads,Ditch cover , tank grating , pavement grating , Steel Grating,Bar Grating,Ditch Covert, Stair Tread,pavement ... gratings, they are Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are widely used in steel ... Goal 4. Pursue Constant Innovation is our Task Steel Bar Grating walkway and Floor