Technical Data Sheet (TDS)
1 Reflectorized Glass Ball
1.1 Compressive strength
White reflectorized glass shall support a minimum load of 25,000Kgs. It should be made from Tempered Glass or toughened glass which is melted in one piece without joint connection.
1.2 Dimension
Reflectorized Glass Ball should be half sphere, dimension show in this table
|
Item |
Dimension |
Millimeter (+-3mm) |
|
1 |
Diameter at surface level |
100 |
|
2 |
Wide at half sphere |
60 |
|
3 |
Wide at glass ball base |
80 |
|
4 |
Height over surface base |
19 |
|
5 |
Thickness under surface level |
27 |
1.3 Glass ball must be high quality clear color, no bubbles, no spot or stained It can reflect all direction (360 degree). Bottoms and side surface of the glass ball should be coated with aluminum or titanium. Surface must be resistant to friction and not adhesive with small particle size of dust, carbon, powder and be self-cleaning with rain or tire abrasion.
1.4 Retroreflectivity must have a minimum value when test according to ASTM D 4280
|
Angle of Measurement (Degree) |
Angle of Incident (Degree) |
Retroreflectivity (MCD/Lux/M2) |
|
0.2 |
-20 |
>112 |
|
0.2 |
-60 |
>112 |
|
0.2 |
+20 |
>112 |
|
0.2 |
+60 |
>112 |
|
0.2 |
+180 |
>112 |
2 Other specification
2.1 Color：White \Green \Blue\Amber\Yellow\Red
2.2 Product Weight：520g
2.3 Hardness：170±5
