Non Presure Vacuum Tube Solar Collector Specification:
1. Inner Manifold Material: SUS 304-2B
2. Outer Manifold Material: powder coating steel sheet
3. Frame Material: 1. 5mm galvanized steel
4. Rubber Seals and Rubber Rings Material: HTY grade silicone rubber
5. Optional Installation Angle: 0°, 30°, 38° and 45°
6. Vacuum Tube: 47 *1, 500mm/58 *1, 800mm
7. Heat Preservation Ability: 72 hours
8. Hailstone Resistance: OD ≤25mm
9. Lifespan: approximately 15 years
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