... platform, floor, walkway, stair treads, trestle, fending, drainage, trench cover, pit cover, suspended ceiling, ventilates and light through facility, etc.TypeWelded steel ... ,25,30,35,40,50mmCross bar pitch38,50,80,100mmmaterialLow carbon steel, stainless steel, aluminiumSurface treatmentUntreated, hot galvanized, paintedStandardsChina: YB/T ...