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| Name︰ | Satin silica glass tubes |
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| specifications︰ | 规格尺寸 available sizes and to1erances
外径范围Outside dia range 外径偏差 OutSide dia tolerance 壁厚范围 Wall thickgess range 壁厚偏差 Wall thickness tolerance
37 ±0．4 0．61．0 0．3
8一13 ±0．5 0．8一1．3 ±0．3
14-16 ±0．8 1．1-1．6 ±0．4
17-20 ±1．0 1．2-1．8 ±0．4
2125 ±1．0 1．3-2．0 ±0．4
26-30 ±1．2 1．52．5 ±0．5
31-40 ±1．4 2．03．0 ±0．5
41-50 ±1．5 2．03．0 ±0．5
管子的长度由用户任选。长度偏差±1mm。弯曲度≤3％。
Tolerances of length±1mm： Maximum bow≤3％o。 Length sizes are free On request Of user．
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| Advantages︰ | Satin Silica glass tube is a special kind of silica glass products for heating and economizing on power．It has all the good properties of quartz glass： high purity， high temperature proof，excellent chemical stability，thermal shock proof，high dielectric strength and the excellent selectively absorbed to IR spectrum．
Technique properties of satin silica glass tube
Purity： content Of SiO2≥99．8％
Thermal stability： Put test piece under 800℃ into water at 20℃，repeat this way 5 times，no blast．
Dielectric breakdown voltage： 15kv／mm．
Chemical stability： Nearly no corrosion in all acids and aquaregia， except the hydrogen fluoride and hot phosphoric acid． The alkali and salt proof properties is better than ordinary glass．
Use temperature： 700℃
Infra-red：emissivity：Wavelength<4U，lower 40％
Wavelength>4U，>80％
Wavelength>5U，>90％
Visible 1ight spectrum transmittance：<8％
This shows，satin Silica g]ass tubes after absorbing infra-red spectrum at Wavelength lower 4µ increased thermal radiation，and the emissivity at 513µ far infrared waveband is more than 90％．Its very important for the materials which need heating and drying (generally more absorbing at zone 3-25µ)．It is an ideal heating material，greatly better than the other infrared materials．
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