Specifications High stable absorption
Long time heat preservation
Strongly anti-wind and anti-corrosion
Long lifespan and better reliability
Compact non-pressurized solar heating system ? Vacuum tubes: High borosilicate glass of ?matarial Tube size(D*F): Φ47-1500mm, Φ58-1800mm Vacuum tubes qty: 12/15/16/18/20/24/25/30 Inner tank material: SUS304-2B food grade stainless steel, thickness 0.4mm Outer tank:?galvanized?steel / colour?steel plate/stainless steel,thickness 0.4mm Frame material: aluminum alloy/stainless steel, strengthened tail support Heat Preservation layer: 50-60mm improved polyurethane integral foaming, superior heat preservation 72-80 hours Reflect angle: 38-45 degree Heating Temperature: 45-95°C ? ? ? ? ?