S. No. Items Details 1 Tank (a)outer Powder Coated M.S. Sheet 0.5mm Thickness (b)Inner S.S. Sheet 304 Food Grade 0.6mm Thickness 2 Tank Insulation PU Foaming 60 mm 3 Structure M.S Powder Coating Sheet 1.6mm thickness 4 Dish ends 0.8mm Thickness 5 Number of Tubes 10 6 Evacuated Tubes Length : 1800 mm ; O.D. – 58 mm ; I. D.– 47 mm Thickness of Wall : 1.6mm Name of Black Coating : Selective Black Absorbing Coating : Al-N/SS-Cu on the outer surface of inner tube Absorptions : 0.94-0.96 Recommended Operating Pressure : 10 Bars