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High efficiency Glass Tube
High efficiency Glass Tube

Glass Tube: 1.Annual output: 12 Million PCS 2. Two furnaces and 50 coating lines; 3.10 years guarantee.

Glass Tube

Three-target all-glass vacuum heat collection tube property and specification


 All-glass double-tube co-axial structure

Glass material

High borosilicate 3.3 glass

Extermal pipe diameter and thickness

Φ=47±0.7mm&=1.6mm Φ=58±0.7mm&=1.6mm

Internal pipe diameter and thickness

Φ=37±0.7mm&=1.6mm Φ=48±0.7mm&=1.6mm

Pipe length

800mm  1200mm  1500mm   1600mm

1800mm  1900mm  2000mm   2100mm


Coating Property



Sediment method

3 target magnertron sputtering plating

Specific absorption


Emission ration


Vacuum tightness

P≤5.0x10-3 Pa

Idle sunning property parameters

Y=260~300square meter.degree/KW

Solar irradiation for obtaining a preset water temperature

H≤4.7MJ/square meter (Φ58)

H=3.7~4.2MJ/square meter

H≤3.7MJ/square meter(Φ47)

H=2.9~3.2MJ/square meter

Average heat loss coefficient

ULT=0.4~0.6W/(square meter. degree)

1.  Two Furnaces for Rough Glass:

2. Cutting Tube and to make it round at one side:

3. Make Coating for inner tube:

4. Vacuum

High efficiency Glass Tube

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