... 75x10---100x10mm etc; I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etcUS standard: 1''x3/16'', 1 1/4''x3/16'', 1 1 ... 3, 35, 38.1, 40, 41.25, 60, 80mm etcUS standard: 19-w-4, 15-w-4, 11-w-4, 19 ... -1985, Japan:JIS Keywords : steel grating , bar grating , welded steel grating , Trench grating , serration grating , safety flooring , industrial grating , close mesh steel grating , foot rest grating and so on 8)the ...