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borosilicate colored glass tube 20120417
borosilicate colored glass tube 20120417

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

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 20120417

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