nice design All-glass coaxial double-layer tubes outer tube diameter: 58/47mm inner tube diameter: 47/37mm length: 1.5-1.8m

Our solar collector tubes can start up fast and collects solar energy fully, there is no need to wait and the water is available immediately, high level vacuum ensure operation under cold weather, and the unique super copper surface allowing lower reflection and minimal heat loss, the current products mainly include: diameter: 47/58mm, and the length is 1800mm, but we can also provide products as your request. Long time warranty for 15 years.

We are looking forward to establish business relationship with you!

3.3 high high-borosilicate glass tube performance and usage introduction

High borosilicate glass is one kind has the level of hydrolysis resistance performance high-borosilicate glass, widely used in laboratory and chemical plants, in recent years in the solar

 heating device on the application have developed rapidly.

advantages

High borosilicate 3.3 glass product has known as chemical stability, high voltage, resistance to 

thermal shock and excellent processing performance characteristics.

quality

High borosilicate 3.3 glass production tube, capillary, bar the use of advanced production 

technology production, high borosilicate 3.3 (DIN ISO3585) in the world recognized. The production process of every step

 has strict quality control, and through ISO9001 quality authentication.

Solar collector tube introduction

Feature:

1 Quality warranty :15 years

2. Quickly thermal collecting efficiency.

3. It works fine under cold weather and area.

Three kind of solar collector:

1.Common :evacuated collector tubes.

2. High-efficiency: Three-target evacuated collector tubes: blue and black-golden

3. High-efficiency: Three-target evacuated collector tubes: purple-golden (purple and golden)

Solar evacuated collector tubes technical data:

Dimension	Φ47	Φ58
Material of tubes	3.3 high borosilicate	3.3 high borosilicate
Glass expansion ratio	3.3±0.1X10-6 k-1	3.3±0.1X10-6 k-1
Outer diameter of tubes	Φ47±0.7	Φ58±0.7
Inner diameter of tubes	Φ37±0.7	Φ47±0.7
Thickness of glass	1.6±0.15	1.6±0.15
Transmittance	≥0.89	≥0.89
Selective coating	SS-CU-AL-N/AL	SS-CU-AL-N/AL
Adsorptivity	≥0.86(AM1.5)	≥0.86(AM1.5)
Emissivity	≤0.080(80±5)	≤0.080(80±5)
Vacuum degree	≤5.0 X 10-3Pa	≤5.0 X 10-3Pa
Collecting performance under sunshine	≥190m2/kw	≥190m2/kw
Hailstone resistance	25mm	25mm

Start up fast and collect solar energy fully

Unique super pure copper surface,allowing lower reflection and minimal heat loss.

High level vacuum ensure operation under cold weather.

Long time warranty to 15 years

High efficience all-glass vacuum solar collector tubing