... per year lead to 50,000 tons .The bearing bar comes in the form of a plain surface flat ... bar, commonly used for platforms, trenchgratings, and stair treads. ... : NoItemDescription1Bearing bar25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm2Bear bar pitch12.5, 15, 20, 23.85, 25, 30, ... 1/4"x 1/4", 1 1/2"x 1/4" etc.3Cross bar pitch38,50,76,100,101.6mm4MaterialQ235,A36 ...