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2024-12-19

Customized High quality, glass tube used to patio gas heater

1. Materials is borosilicate glass, Belongs to hard glass

2. Transmittance: Thickness 3 mm glass tube can reach 92%

3. Can bear 600°C temp.

Temp. difference can reach 250°C,

After semi-tempered technology, Temp. difference can reach 350°C

Physical Properties:

Coefficient of expansion (20°C–30°C)	3.3 X 10-6 K-1
Density	2.23g/cm3
Refractive index	(Sodium D line) 1.474
Dielectric constant (1MHz, 20°C)	4.6
Specific heat (20°C)	750J/kg°C
coefficient of heat conductivity(20°C)	1.14 W/m°C
Visible light transmittance, 3 mm thick glass	92%
Strain temperature	520°C
Annealing temperature	560°C
Softening point at which Borosilicate may deform	820°C
Temp. difference	250°C
Water resistance(ISO 719)	1级
Acid resistance(ISO 195)	1级
Alkali Resistance(ISO 695)	2级

Chemical Composition

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