Material: A) Inner tank: SUS304-2B stainless steel B) Outer tank: Coated steel sheetC) Frame: Coated steel sheet Thickness: A) Inner tank: 0.4mm B) Outer tank: 0.4mm C) Frame: 1.5mm Heat collector: All glass vacuum tube KD-VT-AG 47/1500All glass vacuum tube KD-VT-AG 58/1800A) Coating: Aluminum nitride aluminum (AL-N/AL)B) Size: 47mm X 1500mm /58mm X 1800mm C) Heat absorption rate: 88%~93% D) Qty: 15/20/25/30 pcs Insulation layer A) Material: Imported polyurethane foam (from Bayer Germany) B) Thickness: 50mm (for maximum 72 hours of conservation)C) Density: 42kgs / m3 Tank capacity A) 90/ 120/ 150/ 180 liters (KD-VT-AG 47/1500) B) 150 / 200 / 250 / 300 liters (KD-VT-AG 58/1800) C) Tank diameter: 360 / 410mm Optional accessories: Automatic controller/electric heater /magnesium rod/assistant tank (KD-PH-HA and KD-PH-HP only) Certificate: ISO9001: 2000 / CE certificate 3 years international quality warranty for solar water heater, 1 year warranty for automatic controller Packaging: Vacuum tube / carton (for sample order wooden box packing is required), water tank / carton, frame /carton |