... -preventing,strength-bearing, heat dissipation , explosion-proof , beautiful and durable, easy to clean, convenient installation.Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm ... .5, 25X4.7, 25X5…..40X6, 40X8, 40X10,….90X6….Pitch of Load bearding flat bars(mm)12.5,15, 20, 30, 30 ...