... Plain or Serrated Steel Bar:25x5,30x3,30x5,40x5mm Pitch:30,40,50,100mm HDG Shengyang steel grating (Professional Factory) produce three ... type bearing bar is 20 x 3 to 100 x 10;the specification of I-section type is 25 x 5 ... 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x ... to center): 12.5, 15,25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60.32, 80, 100 mm ...