... 4>Hot-dipped galvanized,Painted Steel Grating/Floor Grating/Steel GridWe produce three kinds of steel ... Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are ... etc, also be according to client's requirement and 30, 40, 60mm are recommended, America standard ... etc, also be according to client's requirement and 50, 100mm are recommended, America standard is available ...