... , 1000x6000mmGrating Material StandardASTM A36, A1011, A569, Q235Grating ProductsSteel Grating, plain and serrated grating, trench grate, stair treadGrating Surface:Hot dip Galvanized, PaintingGrating Specification:19 ... , 60/100 and allGrating Application:steel platform, flooring and walkway, trench cover, stair tread contact personMichelle Gao steel grating,flooring grating, steel bar ...