... grating galvanized steel grating floor grating ProductsManufacturing Process Main Market85% of mild steel flooring grating are exported to the worldwide with ... 1/2''x1/8'' etc2Bearing Bar Pitch12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1 ... , 40, 41.25, 60, 80mm etcUS standard: 19-w-4, 15 ...