Uttam Galva Steels Ltd. Supplies Weather Proof Galvanized Corrugated Sheets. Uttam Galva Steels Ltd. Is the manufacturer of cold rolled steel and galvanized steel. Weather Proof Galvanized Corrugated Sheets is not only specializes in thin guage corrugated sheets with thicknesses as low as 0.12mm suitable for low cost roofing for residential homes and industrial sheds but also roofing for heavy industrial housing with thickness up to 0.70mm. Weather Proof Galvanized Corrugated Sheets is available in a wide range of zinc coating to provide supreme corrosion protection in various environmental conditions. These are subjected to strict quality control tests to assure performance in all climatic conditions.