... and weaving, foodstuff factory, transportation, municipal, administration, parking lot etc.3) steel grating may be applied to platform, floor, walkway ... pit cover, suspended ceiling, ventilates and light through facility, etc.4) category: 1.plain steel flat grates,2.I shape ... ……45×5mmBeraing bar pitch12.5,15,20,25,30,35,40,50mmCross bar pitch38,50,80,100mmmaterialLow carbon steel, stainless steel, ...