... barcomes in the form of a plain surface flat bar, commonly used for platforms, trenchgratings, and stair ... have 7 running lines with yearly capacity of 50,000tons. Jiulong grating and related steel products ... bar25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm2Bear bar pitch12.5, 15, 20, 23.85, 25 ... 1/2"x 1/4" etc.3Cross bar pitch38,50,76,100,101.6mm4MaterialQ235,A36,SS3045Surface treatmentBlack, ...