High Borosilicate Glass Tube 3.3

• Customization: Available
• Certification: ISO
• Application: Glass
• Type: Borosilicate
• Transport Package: Cartons
• Specification: O. D: 100mm-O. D: 300mm
• Trademark: SNAIL GLASS
• Origin: China
• HS Code: 7002320000
• Production Capacity: 5000 Tons/Year

Product Description

Borosilicate glass tubing 3.3 

Properties:
High chemical resistance: borosilicate glass 3.3 is very resistant to water, neutral and acid solutions, strong acids and their compounds.
 
Outstanding transmission: borosilicate glass 3.3 is very transparent, it has stable transmission from UV-A to IR range.

Resistant to thermal shock: it is perfect material in contact with fire and high temperatures due to its high working temperatures and thermal shock.

Dimensions range(mm)
Outside diameter(OD): 3-400mm

Wall thickness(WT): 0.4-13mm

Length(L): 1200-2000

Applications:
Due to its thermal shock resistance, chemical resistance and easily processed features, borosilicate glass tube 3.3 is widely used in laboratory devices, chemical equipment, solar thermal collector, kitchen ware and giftware.

Support:
We have engineers with many years experience in glass tubing processing and special knowledge in glass properties and annealing practise. We can provide free advice and training

No.	Physical Performance	Numberical Value	Unit
1	Coefficient of Mean Linear Thermal Expansion(20ºC-300ºC)	3.3±0.1	10-6/K
2	Transformation Temperature	525±15	ºC
3	Softening Point	820±10	ºC
4	Working Point	1260±20	ºC
5	Density at 20ºC	2.23±0.02	g/cm3
6	Mean Thermal Conductivity (20ºC-100ºC)	1.2	w/m2k
7	Refractive Index	0.92

  

Chemical Data
Hydrolytic Resistance at 98ºC	ISO719-HGB 1
Hydrolytic Resistance at 121ºC	ISO720-HGA 1
Acid Resistance Class	ISO1776-First Class
Chemical Composition
SiO2	81%
B2O3	13%
Na2O+K2O	4%
Al2O3	2%