... ,Evacuated glass tube ,Galvanized Steel frame. SC470 Galvanized Steel water tank, Outer Diameter is 470mm, Inner Diameter is 360, Insulation ... /45 Galvanized Steel frame, angle is 45°. Support frame thickness: 1.8mm.15-30 The number of tubes.Inner(SUS304-2B ... )Screw(SUS304)The price without Heating, Assistant tank, Controller. Thermosyphon Solar Water Heater