Detailed Product Description

Specification:

Structure: all glass double tube co-axial structure

Glass material: high borosilicate 3.3 glass

External pipe diameter thickness: Φ58±0.7mm 1.6mm

                                                  Φ70±0.7mm 2.0mm

Interior pipe diameter thickness: Φ58±0.7mm 1.6mm

Length of tube:1800mm/2000mm

It can be used for more than 15 years long life span

Number of vacuum tubes: 12 to 30 for one collector

Suitable for both flat and slope roof

Employing sliding way for frame, much more easier for installation

Suitable for European style houses

High efficiency: greater than 55% and >42% in winter

Still works as normal as before even one vacuum tube destroys

Hailstone resistance: 25mm

Higher efficiency

Stable performance and beautiful design