Technical data table Model | Φ47×1.5m | Φ58×1.8m | Φ70×1.6m | Outside-tube diameter | Φ47 | Φ58 | Φ70×1.6m | Inner-tube diameter | Φ37 | Φ47 | Φ58 | Wall thickness | 1.6mm | 1.6mm | 2mm | Length | 1.5m | 1.8m | 1.6m | Outside-tube diaphaneity | 0.92 | 0.92 | 0.92 | Selective absorbing coating | AL/N/AL | AL/N/AL | AL/N/AL | Absorbing coefficient | 0.93 | 0.93 | 0.93 | Reflective coefficient | 0.06 | 0.06 | 0.06 | Vacuum degree | P≤5×102 Pa | P≤5×102 Pa | P≤5×102 Pa | The hightest temperature | 250℃ | 250℃ | 250℃ | Anti-impact capability | 25mm | 25mm | 25mm |
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| Specifications︰ | .
-Apply for two layers 3.3 high borosilicate glass tube
-The two layers glass tube,with same axis is vacuumized between them ,the vacuum degree can reach 5 X 10-2Pa.
-High absorbing efficiency:the vacuum magnetic-control sputtering selective absorbing coatings has a high absorption coefficient of more than 93%,and the emission coefficient around 6%.
-Long life: the life span can rech 15 years.
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| Advantages︰ | higher efficiency
high temperature-resistance coating,long life time using for tube without water under the sunshine.
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| Export Markets︰ | all of the world |
| Payment Details︰ | TT |
| Min Order︰ | 100pcs |
| Ship Date︰ | 15days |
| Standard Met︰ | EN |
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