steel grating serrated,plain,I bar Plain,Serrated,I-BAR ISO9001 & GRATING SPECIALIST 1) Light weight, great load-bearing ... , transportation, municipal, administration, parking lot etc.3) steel grating may be applied to platform, floor, walkway, ... ,40,50mmCross bar pitch38,50,80,100mmmaterialLow carbon steel, stainless steel, aluminumSurface treatmentUntreated, hot galvanized, paintedStandardsChina: YB ...