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Contact Person : Mr. Chai Slyvia
Company Name : Jinan Munan International Trade Co., Ltd.
Tel : 86-531-81180905
Fax : 86-531-88033316
Address : Shandong,Jinan,3-2-607, No. 101, Huayuan Road,
Country/Region : China
Zip : 250100

Borosilicate Glass tube

Product Detailed

Borosilicate Glass tube borosilicate glass tubes are widely used in the laboratories, chemical factories

Physical data Borosilicate Glass tube

No.	Physics performance	Numerical Value	Unit
1	coefficient of mean linear thermal expansion(20ºC;300 ºC)	3.3±0.1	10-6 K-1
2	Transformation Temperature	525±15	ºC
3	Softening point	820±10	ºC
4	Working point	1260±20	ºC
5	Density at 20ºC	2.23±0.2	g/cm2
6	Mean thermal conductivity(20ºC-100ºC)	1.2	W/m.K
7	Refractive Index	0.92	l

Chemical Composition in approximate weight %( main components)

Item .	SiO2	B2O3	AL2O3	Na2O +K2O
%	81	13	2	3.08

Chemical Data:Hydrolytic resistance at 98ºC ISO719-HGB 1Hydrolytic resistance at 121ºC ISO720-HGB 1water resistance Grade 1 Test method: ISO1776Acid resistant Class Grade 1 Test method: ISO1776

Borosilicate Glass tube