Compound grating is product which combines grating of certain loading ability with checkered plate. After hot dip galvanized, the compound steel grating plate will warp and distort because of the heat, espacially the great model steel grating plate, difficult to smooth; please note the shaping.

The compound steel grating plate commonly takes series 3 steel grating plate as base part, also can use series 1 or series 2 steel grating plate. Usually uses 3mm checkered plate, also can uses 4mm, 5mm, 6mm as cover.