| Place of Origin: | China (Mainland) |
|---|---|
| Brand Name: | M/N |
| Model Number: | glass tube |
| color: | amber, black, pink ,green, yellow, blue,red, etc |
Quick Details
Specifications
color borosilicate glass tubes/ rod
We have blue (dark and light),green, yellow (dark and light), amber,pink, purple, black.
Normal stocked sizes: 25*4mm, 32*3.2mm, 32*4mm, 38*3.2mm, 38*4mm, 44*4mm, 51*4.8mm, 51*4mm.
Sizes can be produced by customers' request.
Physical data sheet
No. | Physics performance | Numerical Value | Unit |
1 | coefficient of mean linear thermal expansion(20oC-300 oC) | 3.3±0.1 | 10-6K-1 |
2 | Transformation Temperature | 525±15 | oC |
3 | Softening point | 820±10 | oC |
4 | Working point | 1260±20 | oC |
5 | Density at 20oC | 2.23±0.2 | g/cm2 |
6 | Mean thermal conductivity(20oC-100oC) | 1.2 | W/m.K |
7 | Refractive Index | 0.92 | l |
Chemical Composition in approximate weight %( main components)
Item . | SiO2 | B2O3 | AL2O3 | Na2O +K2O |
% | 81 | 13 | 2 | 3.08 |