Borosilicate Glass Tube

Borosilicate Glass Tube

Features:

1) Available colors: dark blue, light blue, amber, light yellow, green, pink, purple, red and opaque black

2) Regularly stocked tubing size (diameter x wall thickness): 25 x 4mm, 32 x 3.2mm, 32 x 4mm, 38 x 3.2mm, 38 x 4mm, 44 x 4mm, 51 x 4mm, 51 x 4.8mm

3) Customized sizes could be made

 4) Regularly stocked rod diameter: 4mm - 35mm

Main composition:

1) SiO₂: 80±0.5%

2) B₂O₃: 13±0.2%

3) Al₂O₃: 2.4±0.2%

4) Na₂O(+K₂O): 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/cm²

6) Hydrolytic resistance at 98°C: ISO719-HGB1

7) Hydrolytic resistance at 121°C: ISO720-HGA1

8) Acid resistance class: ISO1776-1

9) Alkali resistance class: ISO695-A2

Packing

Export cartons on fumigated wooden pallet