... transportation, municipal, administration, parking lot etc.3) steel grating may be applied to platform, floor, walkway, ... and light through facility, etc.TypeWelded steel grating, pressure-locked, socket-welding Steel flat size20×3,25×3,25×5 ... ,40,50mmCross bar pitch38,50,80,100mmmaterialLow carbon steel, stainless steel, aluminiumSurface treatmentUntreated, hot galvanized, paintedStandardsChina: YB/ ...