The Custom Best Quality Spiral Quartz Tube Coiled Glass Pipe is supplied as a precision glass tube / rod. Typical applications: Daily Use. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
Type
Glass Tube
Application
Daily Use
Color
Transparent
Supplier
Shandong Longguang Tianxu Solar Energy Co., Ltd.
Technical data
No.
Physical Performance
Numerical Value
Unit
1
Coefficient of meamlinear thermal expansion (20ºC-300ºC)
3.3+/-0.1
10-6K-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+/-0.02
g/cm3
6
Mean thermal conductivity(200-100ºC)
1.2
w/m2k
7
Refractive index
0.92
1
SiO2
B2O3
Na2O+K2O
Ai2O3
81
13
4
2
Hydrolytic Resistance at 98ºC
ISO719-HGB 1
Hydrolytic Resistance at 121ºC
ISO720-HGA 1
Acid Resistance Class
ISO1776-first class
What to specify when you request a quote
Material — name the glass (borosilicate 3.3, quartz, soda-lime).
OD, ID and wall — give outer and inner diameter or wall and their tolerances.
Length and ends — give length, end finish and any closed or flared ends.
Straightness and bore — state straightness and bore tolerance for precision tubing.
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