evacuated solar tube has vaccum tube with AL/N/S coating,stainless steel or aluminum alloy frame.

evacuated solar tube spec.:

1, Vacuum tube : Heat pipe  with AL/N/S coating

2, Vacuum tube No:  18/ 20/ 24/ 30/35/40/50 heat pipes

3, Vacuum tube dimension: 47x1500/58x1800mm

4, Manifold (interior) : red copper

5, Manifold(exterior): aluminum alloy

6, Insulation: 55mm rock wool

7, Frame: stainless steel or aluminum alloy

8, Daily efficiency: ≥55%

9, Hail resistance: 25mm

10, Max pressure: 10 bar

11, Heat pipe: anti-freezing -35

Water tank

1, Inner tank: titanium steel with crystal(2.5mm thickness)

2, Outer tank: color steel plate

3, Heat preservation: 55mm polyurethane.

evacuated solar tube