The advantage of glass heating element bellow:
1. Infrared radiation in instant heating and the transmissivity of infrared is arrived to 70-75%
2. Far infrared heating transmission, in medium wave, wave length range of 2.2-3.5 micron
3. Health care & environmental protection
4. Can be work in vertically and horizontally
5. With highly heat stability and high temperature resistance
6. Max working temperature is 1300 ° C; Long term used under 1200° C
7.6000h service life, with SGS, RoHs approved
8. Widely used in infrared heater, cooking, oven, stove, baker, painting dryer, drying apparatus, dyeing, print, printer, copy machine, projector, sterilizing device, medical equipment
Detail information of glass heating element:
SIO2>99.9%
Al
Fe
Ca
Mg
Ti
Mn
B
K
Na
Li
26
1.3
1.28
0.8
3.9
0.05
0.2
5
2.8
2
Milky quartz tube Mainly dimension
OD10mm*ID8mm
OD12mm*ID10mm
OD15mm*ID12mm
OD23mm*ID20mm
OD35mm*ID29mm
OD50mm*ID42mm
Milky quartz tube Physical Properties
Opalescence
SiO2
Heat Resistance
The opaque quartz tube transmitting rate in500nm is less than 10%. With more than 70% far infrared transmission
The purity of SiO2>99.9%
Keep under 900° C for 15 minutes, then put into 20° C water 3 times, no crack.
Opaque/Milky quartz tube glass property
Density
1.92*103kg/m3
Compression Strength
>1.0*109Pa(N/m2)
Coefficient of Thermal Expansion
5.4*10-7cm/cm° C
Thermal Conductivity
LOW
Specific Heat
640J/kg° C
Softening point
1600° C
Annealing point
1050° C
Opaque/Milky quartz tube dimension tolerance
Dimension
OD
Wall
Length
5-8
± 0.20
± 0.10
± 1.0
8-12
± 0.20
± 0.10
± 1.0
12-15
± 0.20
± 0.10
± 1.0
15-20
± 0.25
± 0.10
± 1.0
20-30
± 0.30
± 0.15
± 1.0
30-60
± 0.50
± 0.30
± 3.0
Audited Supplier 
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