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Solar Evacuated Tubes For Sale

FOB Price: US $ 1.2 - 5.9 / Unit | Get Latest Price
Min.Order Quantity: 1 Unit/Units
Supply Ability: 30000 Unit/Units per Month
Port: shanghai/ningbo
Payment Terms: L/C,T/T,Western Union
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Quick Details

Place of Origin:
Zhejiang, China (Mainland)
Brand Name:
Model Number:
Non-Pressure, 47*1500mm, 47*1800mm, 58*1800mm
Water Heater
Pipe Material:
Solar Evacuated Tubes For Sale
at least 15 years

Packaging & Delivery

Packaging Details: carton with foam inside and shrinkable tape outside
Delivery Detail: 7 days for 40'HC container


Solar Evacuated Tubes For Sale
1)For 15 years warranty
3)Sample offer
4)OEM service

Working Principle Of Solar Evacuated Tubes For Sale:

Tri-target solar vacuum tube, connecting with water tank or manifold, when it works, cold water flows down into the vacuum tube, and there it is heated with solar energy absorbed by the coating outside of inner vacuum tube, the solar will be absorbed efficiently by the coating with little loss of heat because of the vacuum between the inner and outer glass tubes, and when cold water becomes hot, hot water will rise up to water tank or manifold because of the larger proportion to cold water, cold water again flows into solar vacuum tube for another heating process.



1, Vacuum tube is consists of two layer of glass tubes

2, 0.91 transmittance of outer tube.

3, The outer tube is made of extremely strong transparent quartz sand which can resist impact from hail up to 25mm in diameter.

4, The inner tube is also made of quartz sand, but it is coated with a special selective coating with strong heat absorption and lowest heat loss.

5, The air is evacuated from the space between the two glass tubes to form a vacuum, so it  eliminates heat loss.

6, This why the tubes are able to absorb the energy from infrared rays which can pass through clouds.

7, So it also can operate in low temperature and low sunlight medium.


Solar tube tec SEP:


Three-target solar vacuum tube

Single-target vacuum tube


All-glass double-tube co-axial structure

Glass material

High borosilicate 3.3 glass


Diameter x length

47x1500mm,1.6mm thickness, inner tube diameter:37mm

58x1800mm,1.6mm thicnkess, inner tube diameter:47mm

70x2000mm,2.0mm thickness,inner tube diameter:58mm




Sediment method

Three target magnetron sputtering plating

Single target magnetron sputtering plating

Specific absorption



Emission ratio



Vacuum tightness

<=5.0x10 -3Pa


Idle suning property parameters 260-300m2.C/KW

Heat-loss coefficient


0.6-0.7 W/(m2.C)

Preeure-endure ability


Thermal expansion



Comparing to Al-N-Al vacuum tube, three target has advantages in cold area as following:

a. Absorbance: 12% higher.

b. Emission Ration: 30-49% lower.

c. In alpine area, copper ions emission ration is lower than that of aluminum ion. So it could work properly even circumstance temp. is lower than -30Deg C.

d. Stainless steel ion has performance of high temp. resistant, anti-stagnation temp. coating will not decay or get aging or disappears.

Dia. 47 with length of 1500mm.

Dia. 58 with length of 1500mm.

Dia. 58 with length of 1600mm


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Welcome to visit and join with us, OU'SUN solar will be your good partner! Welcome to Our Site
We Design, Manufacture and deliver the sun's unlimited and cheapest energy to your daily life.
OU'SUN Solar Energy Technology Co., Ltd are a recognized manufacturer of high quality solar water heater in China since 2000.

It is located in the middle of Shanghai and Hangzhou city (haining), only 1,5 hours from Shanghai and Hangzhou airport with convenient traffic.

Our compa... View detail

Basic Information

Business Type: Manufacturer, Trading Company  
Main Products: Solar Water Heater,Solar Collector,Solar Bracket,PVC Panel,PVC Ceiling  
Number Of Employees: 51 - 100 People  

Trade & Market

Main Markets: Southern Europe
Northern Europe
Central America
Western Europe
Eastern Asia
Mid East
Southeast Asia
Eastern Europe
South America
North America
Total Annual Sales Volume: US$10 Million - US$50 Million  
Export Percentage: 41% - 50%  

Factory Information

Factory Size (Sq.meters): 3,000-5,000 square meters  
Factory Location: Zhejiang Province Haining City Yuanhua Town  
No. of Production Lines: 7  
Number of R&D Staff: 5 - 10 People  
Number of QC Staff: Less than 5 People  
Contract Manufacturing: OEM Service Offered   Design Service Offered  

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How It Works

China (Mainland) | Manufacturer, Trading Company | Contact Details
Experience: Established 2012 , 4 years OEM

Communicate with Supplier:

Ms. Tina Ling
Ms. Tina Ling:
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