Technical date of heat pipe solar tube collector with solar keymark certificate

1.Manifold box:Aluminum alloy 1.8mm with black power painting

2.Manifold pipe:cooper tube with 1mm thickness

3.Vacuume tube:twin-glass with (three-target) selective absoption coating

4.Heat pipe:cooper with 0.7mm thickness

5.Freeze resistance:below 35 or more

6.Tube holder:First-class Nylon66

7.Permissible Wind:30m/s

8.Snow load:30cm

9.Working pressure:0.6mpa,testing pressure:0.9mpa

10.Effeciency:65.4%-76.2%.