Steel grating: 1.Bearing bar pitch:30,40,60mm 2.Cross bar pitch;50,100mm 3.Best price ... easy to clean, convenient installation.Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3,19X5,20X3, 20X5, 25X3 ... 34.8, 35.3, 40, 60, 80……Pitch of cross bars(mm)38.1, 50, 50.8, 70, 75 ... plain I type, serrated type, serrated I type; cross bar: round type and square twisted type.Types of steel ...