Length  (nominal)  1800mm

Outer tube diameter   58mm

Inner tube diameter   47mm

Weight            2.2kg

Material         Borosilicate Glass 3.3

Absorptive coating   ALN/AIN-SS/CU

Stagnation Temperature   >200 Celsius degree

Absorptance    >93%

Emittance      <8%

Maximum strength   0.8Mpa

Resist cold       -35 Celsius degree

Resist hailstone    25mm

Resist wind        30m/s

Start-up temperature   <=25 Celsius degree