1.Normal size(OD*WT(mm))
For light wall
58*2.0,100*2.6, 12*2, 12*2.2,
16*2.0, 18*1.8, 22*2, 38*4.0,
50*1.8, 60*2.8, 60*2, 65*3.0,
70*2.4, 80*1.5, 80*2.2,
For heavy wall
19*3.0, 19*3.0, 25*4, 32*4.0,
38*3.3, 44*4.0, 45*5, 51*4.8,
51*7.0, 60*5.0, 65*5, 65*5.0,
2.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%
3.Physical and Chemical Properties
a) Coefficient of mean linear thermal expansion(20/300℃):3.3±0.1(10-6K-1)
b) Transformation temperature: 525±15℃
c) Melting point::1,260±20℃
d) Softening point:820±10℃
e) Density at 20℃:2.23g/cm2
f) Hydrolytic resistance at 98℃: ISO719-HGB1
g) Hydrolytic resistance at 121℃: ISO720-HGA1
h) Acid resistance class:ISO1776-1
i) Alkali resistance class:ISO695-A2