Serrated steel bar grating High strength; Non-skid Excellent ... 30x4, 30x5, 32x3, 32x5, 40x5, 50…75x8mm, etc.2Bearing bar pitch25, 30, 30.16, 32.5, 34.3, 40, ... 62, 65mm, etc.3Cross bar5x5, 6x6, 8x8mm (twisted bar or round bar)4Cross bar pitch40, 50, 60, 65, 76, 100, 101 ... coated, or as customers’ requirement.6Flat bar typePlain, Serrated (tooth-like), I bar (I section)7Material standard Low carbon steel ...