China high borosilicate glass tube for lighting/glass cup/lab tube

Adopt high borosilicate glass
High temperature resistant
Dia: 8~315 mm
Wall thickness:1.0~10 mm
fire polished or cut neat

 

We have our own furance for the production of those lighting glass tubes, we can customize the Inconvenient specifications to the customers' demand, and the delivery time will be very short. our glass tubes can keep high brightness for longer time than other glass, and looks more transparent due to the borosilicate material.

The material is high borosilicate 3.3. And the working temperature is 450-500C.
 Borosilicate 3.3 series glass is a kind of special type glass material with the features of low expansion coefficient,high temperature resistance,high intensity, high rigidity, transparency and chemical stability. It doesn't explode in high temperature, and can be forged and drawn to variety of formation when soften.

 All these splendid features enable it to be widely used in the field of solar energy,chemical industry, pharmaceutical packaging, electric light source,artificial crystal, artificial craft decoration and so on.Compared with ordinary glass. It's non poisonous, and it has made the big progress in its mechanical property, thermal stability, hydrolytic resistance.acid resistance and alkali resistance glass

 High borosilicate glass products:
 We can provide a full range of borosilicate glass products, such as borosilicate tube, glass rods
 Glass tube OD from 8mm~315mm
 Glass rods dia from 6~42mm
 Glass wall thickness: 1.0mm~10mm
 Technical data for glass tube
 Main composition:1) SiO2: 80 0.5%
 2) B2O3: 13 0.2%
 3) Al2O3: 2.4 0.2%
 4) Na2O: 4.3 0.2%
 Chemical properties:
 1) Coefficient of mean linear thermal expansion (20 C/300 C):3.3 0.1 (10-6K-1)
 2) Transformation temperature: 525 15 C
 3) Working point: 1, 260 20 C
 4) Softening point: 820 10 C
 5) Density at 20 C: 2.23G/cm
 6) Hydrolytic resistance at 98 C: ISO719-HGB1
 7) Hydrolytic resistance at 121 C: ISO720-HGA1