Heavy Load Welded Grating Sheets: Welded with flat steel with the width of 65mm to 200mm, thickness of 5mm to 20mm. Used in freight yard, the terminal, coal road bridges for large trucks going through. This kind of Welded Steel Grating Sheet is welded with flat steel at the distance of 40mm. This is the most light and economic kind. Applied to the condition requires small distances. Heavy Load Welded Grating Sheets: Welded with flat steel with the width of 65mm to 200mm, thickness of 5mm to 20mm. Used in freight yard, the terminal, coal road bridges for large trucks going through. This kind of Welded Steel Grating Sheet is welded with flat steel at the distance of 60mm while the distance of the opposite direction is 50mm. Suitable for mine exploration factories. Welded Steel Grating Sheet with the steel distance of 30mm is the most popular kind for industrial uses. Among the series steel grating sheet products, this type offers strongest resistance against the shock to the surface. Welded steel grating sheet is welded with I type flat steel offering the features of light weight and heavy load. Suitable for various sites, especially for corridors and platforms