1.Supplied directly from the factory,lowest price 2.Stable supply capacity,500 tons per month 3. Sample for free
1. Manufacturing process
Furnace: Automatic temperature control ,≥1200°c;
There production lines.
The borosilicate glass product is processing with a advanced production technology by using the characteristic that in the condition of high temperature the glass is conductive .The borosilicate glass tube ,its Melting temperature is1680°C,Softening temperature is 830 °C ,Coefficient of thermal expansion is 3.3×10-6K-1 .
2.Size
OD: 3 - 230mm ;
Thickness: 1.1 - 11mm;
Length: Depends on different requirments
3.Physical and chemical properties
Mechanical properties | |
Density | 2.23±0.02g/cm³ |
Mohs scale of hardness | >7 |
Thermodynamic performance | |
Coefficient of mean linear thermal expansion | (0-300°C)(3.3±0.1)×106K1 |
Softening point | 820±10°C |
Transformation temperature | 516±10°C |
Specific heat capacity | (20-100°C)0.82KJ×(Kg×K)-1 |
Thermal conductivity | 1.2W×(m×K)-1 |
Thermal shock resistance | 180K |
The film thermoelectric performance | 100K |
Maximum working temperature | Shorttime(<10h)500°C,Longtime(>10h)450°C |
Chemical properties | ||
Hydrolytic class | ISO719/DIN12111 HGB1 ISO720 | HGA1 |
Acid class | ISO1776/DIN12116 | 1 |
Alkali class | ISO695/DIN52322 | A2 |
Optical properties | |
Refractive index | Nd:1047384 |
Transmission rate | >91% |
4.Usage
1. Glass bar: can be used for processing high-grade decorative lighting supplies
2.Glass tube: can be used for chemical equipment, chemical pipeline, tube for crafts
3. Can be used for processing rough tube of solar vacuum tube
4. Can be used for processing high-grade daily necessities
5.The package
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3.3 borosilicate glass tube
