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High Borosilicate 3.3 Evacuated Glass Tube

Advantages:

1.Vacuum degree of interlayer is 5.2x10-4 which effectively reduced the heat loss and guarantee heat loss rate of 0.04-0.06, and ensure more 15 years service life.

2.Great transmission property (increase 5% transmission rate), possess self-cleaning function.   

3.Apply metallic copper as bottom metal layer, which is super strong in absorbing and possess extra low heat loss, the heat loss rate is 50% lower than ordinary vacuum tubes, it can reach ULT≤0.5W/(m2·℃)

4.Full automatic evacuated tube production line and advanced and strict testing process guarantee the entire quality stability.

5.The stainless steel aluminum nitride in the absorbing layer has high thermal stability, even the glass was melted, the coating will not fall off; using stainless steel ion to substitute aluminum, which make it has great withstanding performance of high temperature, aging, weakening and stagnation.

6.Patent technology developed by Himin autonomously has break the limitation of graded coating, and enable its working temperature from -40°to 40°

Technical data:

Models	58×1800	47×1500	70×2100
Structure	Three Target
Outer tube diameter	58±0.7mm	47±0.5mm	70±0.7mm
Inner tube diameter	47±0.7mm	37±0.5mm	47±0.7mm
Outer Tube thickness	1.6±0.15mm	1.6±0.15mm	2.0±0.15mm
Inner tube thickness	1.6±0.15mm	1.6±0.15mm	1.8±0.15mm
Tubes length	1800±5mm	1500±5mm	2100±5mm
No coating length	less than 20mm	less than 20mm	less than 20mm
Material of coating	Copper, Aluninum, Stainless Steel
Absorptance	bigger than0.94
Emittance	less than 0.06
Vacuum	less than 5.2×10-4Pa
Transmittance of Outer Tube	0.92
Stagnation temperature (height)	270~300℃
Heat-loss coefficient	less than 0.5 w/ (m2*℃)
Bearing hailstone ability	30mm steel ball from 450mm high
Pressure-endure ability	1MPa
20GP/40GP/40HQ load	3160/6500	4700/11550	1800/3860