Sangao Solar Energy Glass Vacuum Tubes have high-performance absorption ratio, low reflectance ratio and strong heating.
Minimum Order Quantity: 500 Piece/Pieces
Supply Ability: 5000 Piece/Pieces per Week
Payment Terms: L/C,D/P,T/T
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The specification of Sangao Solar Energy Glass Vacuum Tubes
| Structure | All-glass double-tube co-axial structure |
| Glass material | High borosilicate 3.3 glass |
| External pipe diameter | D=47±0.7mm D=58±0.7mm D=70±0.7mm |
| Internal pipe diameter | D=37±0.7mm D=47±0.7mm D=58±0.7mm |
| Thickness of vacuum tube | 1.6mm / 1.8mm |
| Heat loss coefficient | ≤0.90W( m2.) / ≤0.85W( m2.) / ≤0.80W( m2.) |
| Sun exposure temperature | ≥200 |
| Coefficient of thermal expansion of glass | 3.3×10-6 |
| Cover glass tube transmittancy | 0.91 |
| Solar selective surface coating sputtering gradient | Al-N / Al/ Cu |
| Solar absorption ratio(AM1.5) | 0.93 |
| Emission ratio(80) | 0.06 |
| Anti-hail capability | No damage from D25mm hail impact |
Model No.:
Features: assistant parts
Haining Sanxi Solar Industry Co., Ltd., is specialized in exporting solar water heaters
Model No.: SC-C01
Features: 1EN12975/EN12976,CE,ISO ,SRCC
2High level quality and service(OEM)
3.reasonable price
4.offer 2%vacuum tube
5.long life span
Model No.: SC-C011
Features: 1EN12975/EN12976,CE,ISO ,SRCC
2High level quality and service(OEM)
3.reasonable price
4.offer 2%vacuum tube
5.long life span
Model No.: SLB
Features: 1.CE,SRCC,Solar Keymark
2. Anti-freezen & pressurized
3. 10 years warrantee
4. 10-15 days delivery
5. OEM available...
Model No.: 58-1800mm, 47-1500mm
Features: Solar Heat Pipes
Model: 58-1800, 47-1500mm
Place of origin: Haining, Zhejiang
Use: Solar Water heater parts
Material: galss
Model No.:
Features: Three High Evacuated Soalr Tubes have high-performance absorption ratio, low reflectance ratio and strong heating.
Model No.: 58-1800mm, 47-1500mm
Features: Solar Glass Vacuum Collector
Kind:Three chamber heat pipe
Material:galss & SUS & Al
Size:47-1500 & 58-1800
Use:Solar heater
Model No.: 47-1500mm
Features: Material: Glass
Model: 58-1800mm,
Model: 47-1500mm,
Max Temp. 250 degree
Model No.: 58-1800mm
Features: 3 high with double effect tube
Material:glass&copper
Model: 58-1800, 47-1500mm
Place of origin: Haining, Zhejiang
Model No.: 58-1800mm, 47-1500mm
Features: Solar Energy Super Heater Pipes
Material: glass & Cu & Al
Size: 58-1800mm, 47-1500mm
MOQ: 500 PCS
Payment: T/T, L/C or D/P
Model No.:
Features: Sangao Solar Glass Tubes have high-performance absorption ratio, low reflectance ratio and strong heating.
Model No.: SJL-SP
Features: a).Solar water heater with CE, CCC certification
b).ISO9001:2000
c).Imported SUS304-2B Food Grade StainlessSteel
d).Heat Pipe