58mm tri-element all glass vacuum tube - Group1 - Product Catalog - Solar Collector, Solar Heating, Solar Hot Water Heater, Solar Water Heater, Vacuum Tube Solar Collector, Flat Plate Solar Collector by Lotusino

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58mm tri-element all glass vacuum tube

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Product Description

Length (nominal) 1800mm

Outer tube diameter 58mm

Inner tube diameter 47mm

Weight 2.2kg

Material Borosilicate Glass 3.3

Absorptive coating ALN/AIN-SS/CU

Stagnation Temperature >200 Celsius degree

Absorptance >93%

Emittance <8%

Maximum strength 0.8Mpa

Resist cold -35 Celsius degree

Resist hailstone 25mm

Resist wind 30m/s

Start-up temperature <=25 Celsius degree

HS code︰	84191900
Productivity︰	10,000pcs/month
Sample︰	charge
Sample Lead Time︰	10~15 days
Sample Delivery︰	Express
Feature︰	Assimilate the advanced 12 layers of spattering deposition of trivalent element technology, high borosilicate glass, gradual change of ALN/ALN-SS/CU selective complex absorptive coating. And these make vacuum tubes have high performance of absorptance and low reflection ratio. Through the interlayer, vacuum has a unique effect of thermo, with its temperature up to 380 Celsius degree of idle sunning, performing a strong heating ability.

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