... running lines 3.Product capacity:100 tons/day 4.ISO Flat bar grating is one of the most widely used steel ... in the form of a serrated or a plain surface flat bar, commonly used for platforms,trench gratings, and stair treads ... ,30x4,30x5,32x5,40x5,50x5,.....75x10mm2Bear bar pitch12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3 ...