| Place of Origin |
Zhejiang China (Mainland) |
| Brand Name |
Wanbao |
| Model Number |
WB-ET01 |
Detail Description of the Solar Vacuume Tube Collectors: Features: 1) Typical Size: Φ47x1, 500mm / Φ58x1, 800mm / Φ70x2, 000mm 2) External tube diameter: Φ47+/-0.7mm, Φ58+/-0.7mm, Φ70+/-0.7mm 3) Internal tube diameter: Φ37+/-0.7mm, Φ47+/-0.7mm, Φ58+/-0.7mm 4) Thickness: 1.5mm+/-0.1mm, 1.7mm+/-0.1mm, 2.0mm+/-0.1mm 5) Tube length: From 1.2m to 2.1m 6) Glass material: Borosilicate glass 3.3 7) Absorbing coating properties: AL-N/AL or Al N/Al N-SS/Cu selective absorbing coating 8) Absorptance: 0.92 9) Emittance: 0.07 10) Heat loss coefficient: ≤0.70W/(m²xºC) 11) Pressure-endure ability: 1Mpa 12) Bearing hailstone ability: 25mm 13) Lifespan: 15 years 14) Widely used for solar water heater 15) Packing: export carton