borosilicate glass tube 1.low coe: 33 2.high light transparency 3,healthy products,contain no heavy metal.

borosilicate glass tube

Coefficient of mean linear thermal expansion (20°C/300°C)	Softening point	Transformation temperature:	Hydrolytic resistance at 98°C	Hydrolytic resistance at 121°C	Acid resistance class	Alkali resistance class	Applications
3.3±0.1 (10-6K-1)	820±10°C	525±15°C	ISO719-HGB1	ISO720-HGA1	ISO1776-1	ISO695-A2	Superior heat- resisting products and crafts

borosilicate glass tube

 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%

 

clear borosilicate glass tubing

 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

 

MOQ:100 KGS PER color per size.

Delivery:within 25 days after receiving of payment.

Package:cartons with pallets or in wooden box

Payment:t/t or l/c

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