Shandong, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Metallurgy, Mineral & Energy
Terms of Payment:
Average Lead Time:
Peak season lead time: within 15 workday
Off season lead time: within 15 workday
OEM/ODM Availability:
OEM/ODM Service
Sample Available

Heatpipe, 3.3 Borosilicate Glass Tube Glass, Solar Evacuated Tubes for Sale manufacturer / supplier in China, offering Solar Heatpipe 3.3borosilicate Glass Tube for Sale, vacuum Glass Tube / Domestic Hot Water Collector Tube, Thermal Solar Tube Borosilicate 3.3 Color, 70mm Solar Glass Vacuum Tube and so on.

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Solar Heatpipe 3.3borosilicate Glass Tube for Sale

Get Latest Price
Purchase Qty. / Reference FOB Price
1,000-9,999 Pieces US $1.7
10,000+ Pieces US $1.6
Port: Tianjin, China
Production Capacity: 7000pieces/Day
Payment Terms: L/C, T/T, Western Union
Condition: New
Type: Double Vacuum Heating Tube
Certification: ISO
Application: Water Heater, Solar Thermal, Air Conditioning System
Pipe Material: Glass
Pressurized: Pressurized

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Basic Info

Model NO.: 47*1800-3T
Structure: All-Glass Concentric Tube Geometry
Glass Material: High Borosilicate Glass
Length: 1800mm
Outer Tube Diameter: 47mm
Inner Tube Diameter: 37mm
Wall Thickness: 1.6mm
Transmittance of Outer Tube: 0.93
Net Weight: 1.7kg
Name: Solar Heatpipe 3.3borosilicate Glass Tube for Sale
Trademark: Gaia Solar
Transport Package: Export Standard Packing
Specification: 47*1800-3T
Origin: Dezhou, Shandong
HS Code: 8419901000

Product Description

                                                Solar Heatpipe 3.3 Borosilicate Glass Tube  For Sale

Products Description

The evacuated tube is the key component to all the thermal heaters and system. It's similar to a conventional Dewar flask and consists of two borosilicate glass tubes, resistant to high chemical and thermal shock. The outer side of the inner tube is coated with a sputtered solar selective surface. This coated inner tube is closed at one end and sealed at the other end to the outer tube. The annular space between the outer tube and inner tube is evacuated to avoid heat loss in conduction and convection. The key element determines function of tube is the technology of the film coating, Gaia Solar tube is the best efficiency tube you can find in China, with the highest absorptance rate of near 97% with common rate of 94% and lowest emission rate near 3% with common rate of 5%. 


ALN/ALN-SS/Cu/ Glass
Method of DepositionDC reactive sputtering
Absorptance 94%
Variation along Tube Length3%
Emittance < 6% (100°[1](C)
Vacuum Gas Pressure£ 5 x 10-3 Pa
Stagnation Temperature (typical)³ 270 °[1](C
Recommended Working Temperature£ 150 °[1](C
Heat Loss Coefficient of Collector Tube£ 0.85W / (M2·[1]°[1](C)


1.Higher efficiency collector, much lower heat loss with vacuum insulation;

2. High pressure and super anti-freezing performance in cold weather condition;

3. Less heat loss for closed loop circulation;

4. No system drainage even though one or several tubes are broken;

5. No risk of tube breaking from thermal shock;

6. More convenient in system parts carring and installation;

7. Can load 6960 pieces in one 40 HQ;

8.Cheaper than other thermal conductivity

About Us

Gaia Solar is located in Dezhou city which known as China Solar Valley. During past ten years history, Gaia Solar has become one of the largest private solar energy companies in china. Its main products solar evacuated tube, solar water heater, solar oven, parabolic trough solar collector and his receiver tube have exported more than thirty countries. 

Good quality, competitive price and best service will be your best cooperator in the solar energy field.

Contact Us
Dezhou Gaia Solar Energy Co.,Ltd

Room 712, Baitiane Plaza, No.7 of HuBinnan Road, Dezhou City, Shandong Province

Mobile and Chat: 0086-13953485199




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