We are the biggest manufacture of colored borosilicate glass rod&tubing in China ,we are also the exclusive manufacture of colored borosilicate glass rod&tubing since 2002.
Main composition:
a) SiO2: 80 ¦0.5%
b) B2O3: 13 ¦0.2%
c) Al2O3: 2.4 ¦0.2%
d) Na2O (+K2O): 4.3 ¦0.2%
Chemical properties:
a) Coefficient of mean linear thermal expansion :
(20/300 ¦C):3.3¦0.1 (10-6K-1)
b) Transformation temperature: 525¦15¦C
c) Working point: 1,260 ¦20¦C
d) Softening point: 820 ¦10¦C
e) Density at 20¦C: 2.23g/cm¦
f) Hydrolytic resistance at 98¦C: ISO719-HGB1
g) Hydrolytic resistance at 121¦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: 3.5ù300mm W.T:0.8ù12mm, length 3000mm.
OEM is welcomed.
