先采用进的连熔法生产技术，结合有效的自动控制系统生产出的透明石英玻璃管，具有纯度高、透射性强、尺寸控制严格，羟基含量低等特点，是卤素灯、汞灯、金卤灯和其他石英灯的首选抗高温材料。羟基含量可以根据顾客要求控制在小于20ppm\15ppm\10ppm\5ppm\2ppm.。

产品性能；热性能和机械性能，尺寸公差严格，羟基可以根据顾客的要求定制（1-160PPM）。

产品用途；广泛应用于卤素灯，汞灯，金卤灯，复印机灯管，舞台灯等电灯源以及化工管道，耐高温器皿等高温产品。

Clear Quartz Tube

This is clear fused quartz glass tube available as continuous machine drawn and automatic controlled tubing. This glass had the typical characteriastics of high purity, good spectral transmission, well controlled dimension and lower OH and so on.

It serves as the first choice of heat resistant material for halogen lamps, mercury lamps, metal halide lamps and other quartz lamps. This glass can be supplied in the range of 3-260mm outside diameter, 0.5-8.0mm wall thickness and 10-3000mm length.

Exhaust tubes with good CPK are suitable for high-speed streamline production. And further processing of trim cutting, fire polishing, bending and pinching and etc. can be done according to the requirement of customers. OH-content can be controled within 20ppm\15ppm\10ppm\5ppm\2ppm according to the requirement of customers.

尺寸公差（Dimensional Tolerance）

外径范围Range of OD 外径OD 壁厚WT 偏壁厚Siding 椭圆度Out of Round 弯曲度Bow/1220mm

≤6mm ±2.0% ±10% ±12%

2.0%

2.5mm

6.00-15.00mm ±1.25% ±8% ±10%

1.5%

2.5mm

15.00-20.00mm ±1.25% ±10% ±15%

1.5%

2.5mm

20.00-25.00mm ±1.25% ±10% ±15%

1.5%

3.0mm

25.00-30.00mm ±1.35% ±12% ±15%

1.5%

3.0mm

30.00-80.00mm ±1.5% ±14% ±15%

2.0%

3.0mm

化学成分（Chemical Composition） 单位(unit):ppm

Al Fe K Na Li Ga Mg Cu Mn Pb B Ti

20 1.0 3.5 3.5 1.0 2.0 0.5 0.3 0.5 ＜0.01 ＜0.2 2.0

物理性能（PhysicalProperties）

密度（g/cc） Density 20°Ckg/m^3 (×10^3) 2.2

热膨胀系数 Coefficient of expansion 0.56

软化点 Soffening point ( °C) 1670

退化点 Anneaing point (°C) 1210

变形点Strain point (°C) 1110

杨氏模量 Youngs modulus (Pa) 7.3×10^5