... and smooth surface, good strength-to-weight ratio, wide range of open area percentages, accurate hole sizes, available in corrosion resistant materials ... platform, pathway, bridge, trench covers, fences and handrails at systems of petro-chemicals, urban construction engineering and urban sanitary engineering4.Specifications ... 8Inch0.114-0.0129Inch2.89-3.28mm40.00%5.Pictures of Perforated metal sheet: