Coating technology | Three target coating. |
Weight | 2kg±0.05kg |
Color | Blue / purple |
Outer tube diameter | Ф58±0.5mm |
Inner tube diameter | Ф47±0.5mm |
Outer Tube thickness | 1.6±0.15mm |
Tubes length | 1805±5mm |
Absorptance | 0.94~0.96 |
Emittance | 0.03~0.06 |
Solar vacuum tube production br>