borosilicate colored glass tube 20120420

borosilicate colored glass tube Available colores :clear ,dark blue,light blue,amber,light yellow ,green ,pink,red and ect.

Material :artistic building material 

Use: home decoration /adomment

Personality :green&healthy products 

Colored borosilicate glass 

Available colores :clear ,dark blue,light blue,amber,light yellow ,green ,pink,red and opaque black ,opaque white 

Regularly stocked tubing size: 25*4mm 

32*3.2,32*4,38*3.2 ,38*4,44*4,

Technical Data:

Physical Property No. Physical performance Numerical Value Unit 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 Softening point 820±10 °C 4 Working point 1260±20 °C 5 Density at 20°C 2.23±0.02 g/cm3 6 Mean thermal conductivity(20°C-100°C) 1.2 w/m2k 7 Refractive index 0.92 1 Main Composition SiO2 B2O3 Na2O+K2O Al2O3 81 13 4 2

borosilicate colored glass tube 20120420