... ,35,40,50mmCross bar pitch38,50,80,100mmmaterialLow carbon steel, stainless steel, aluminumSurface treatmentUntreated, hot galvanized, paintedStandardsChina: YB/T 4001.1 ... -88)UK: BS4592-1987Australia: AS 1657-1985 carbon steel or stainless steel grate