... ,being economical of materials,being sturdy and dura Steel grating:1) Light weight, great load-bearing capacity, non-slip and safe, easy ... ,25,30,35,40,50mmCross bar pitch38,50,80,100mmmaterialLow carbon steel, stainless steel, aluminiumSurface treatmentUntreated, hot galvanized, paintedStandardsChina: YB/T 4001.1 ...