... ,being economical of materials,being sturdy and dura Steel grating:1) Light weight, great load-bearing capacity ... , transportation, municipal, administration, parking lot etc.3) steel grating may be applied to platform, floor, walkway, stair ... 35,40,50mmCross bar pitch38,50,80,100mmmaterialLow carbon steel, stainless steel, aluminiumSurface treatmentUntreated, hot galvanized, paintedStandardsChina: YB/T ...