... 30 Vacuum Tube Borosilicate glass, red copper heat pipe, aluminum fin Manifold Copper flow passage, PU insulation, Aluminium alloy ... thickness Material Aluminium alloy plate Accessories Workstation system, Electric heater, E-Parts box, thermostat, Switch, Anode magnesium bar, T ... 25mm Features description:The balcony heat pipe solar water heater composes of heat pipe solar collector, storage water ...