... 1-2007GB 700-88GB/T13912-2002AmericaANSI/NAAMM(MBG531-00)ASTM(A36)ASTM(A123)BritainBS4592-1995BS4360(43A )BS729AustraliaAS1657-1992AS3679AS1650Common specifications: No ... etc; I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etcUS standard: 1''x3/16'', 1 1/4''x3/16'', 1 1 ... 35, 38.1, 40, 41.25, 60, 80mm etcUS standard: 19-w-4, 15-w-4, 11-w-4, ... , Japan:JIS Galvanized and Painted Steel Grating with standard size