3.3 Colored Borosilicate Glass Tube & Rod

Huailai Tianyuan Special Type Glass Co., Ltd., established in 2002, lies in Huailai County, Hebei Province. Our company covers an area of 90,000m2 and has more than 300 employees now. Being 100km away from Beijing City, we are bestowed of convenient transportation and excellent investment environment.

We mainly produce the 3.3 series borosilicate glass, especially the borosilicate colored glass rods and tubes as a mainstay of our products.

Following Specification of 3.3 Colored Borosilicate Glass Tube & Rod :

Main composition :
a) SiO2: 80 A 0.5%
b) B2O3: 13 A 0.2%
c) Al2O3: 2.4 A 0.2%
d) Na2O (+K2O): 4.3 A 0.2%
Chemical properties:
a) Coefficient of mean linear thermal expansion :
(20/300 A C):3.3A 0.1 (10-6K-1)
b) Transformation temperature: 525A 15A C
c) Working point: 1,260 A 20A C
d) Softening point: 820 A 10A C
e) Density at 20A C: 2.23g/cmA
f) Hydrolytic resistance at 98A C: ISO719-HGB1
g) Hydrolytic resistance at 121A C: ISO720-HGA1
h) Acid resistance class: ISO1776-1
i) Alkali resistance class: ISO695-A2

We now can produce 11 colors: red, opaque black, opaque white, pink, purple, green, yellow, amber, dark blue, light blue and transparent black. Test shows they contain no heavy metal elements.

The size we can do : OD: 3.5a 300mm W.T:0.8a 12mm, length 3000mm.
OEM is welcomed.