... , Bolted fixing 4. Without nosing, Welded fixing Main specification: 1. Bearing bar height x thickness: 20x3, 25x3,25x5,30x3,30x5,32x3 ... .3x335x3,35x5,38x3,38x5,40x3,40x5,50x3,50x5,etc. 2. Bearing bar pitch xtwisted bar pitch : 30x100,30x50,40x100,40x50,60x50 ... , 30.16x101.6,etc.Grating Dimension Bearing bar pitch(mm)12.5, 15,25, 30, 30 ...