ball
|
outer material
|
Steel with anticorrosive surface treatment
|
interior material
|
Stainless steel SUS304 2B, thickness 0.6 mm
|
Isolation |
55mm thick polyurethane
|
outside diameter
|
470mm            |         420mm |
joint sealing
|
Joint silicone |
Joint Dust
|
EPDM |
| tubing
|
outside diameter
|
58mm +/- 0,7mm           |        47mm +/- 0,7mm |
inside diameter
|
47mm +/- 0,7mm           |        37mm +/- 0,7mm |
Thickness of the outer glass
|
1,8mm +/- 0,15mm        |       1,8mm +/- 0,15mm |
Interior Glass thickness
|
1,6mm +/- 0,15mm        |       1,6mm +/- 0,15mm |
weight
|
2,22 +/- 0,18kg              |       1,35 +/- 0,12kg |
structure
|
glass tube coaxial double layer
|
length
|
1812 +/- 4mm               |       1542 +/- 4mm |
Absorption layer
|
AI-N/AI |
Absorption rate
|
94 - 96% |
losses
|
4 - 6% |
pressure vacuum
|
P<5*10-3 PA |
temperature change
|
>250°C |
Loss coefficient
|
< 0,6W |
Hail resistance
|
25 mm in diameter
|
. 