Fused Silica Capillary Tube Drawing | Custom Sizes Available

Fused Silica Capillary Tube Drawing | Custom Sizes Available

We specialize in high-precision fused silica capillary tube drawing, delivering custom-sized solutions for demanding analytical, biomedical, and semiconductor applications. Our drawing process begins with premium synthetic fused silica boules, which are heated to near 2000°C and drawn vertically through precision-controlled furnaces. This method ensures exceptional dimensional uniformity, ultra-smooth inner surfaces, and tight tolerances down to ±0.5 μm on inner diameter.

Our capillaries are available in a wide range of dimensions: inner diameters from 2 μm to 2 mm, outer diameters from 50 μm to 3 mm, and lengths up to several meters per piece. We offer optional polyimide, aluminum, or gold coatings to enhance mechanical strength and chemical resistance. Custom specifications – including tapered ends, special ID/OD ratios, and strict ovality control – are readily accommodated.

The high-purity SiO₂ composition (≥99.99%) delivers outstanding thermal stability (up to 1100°C continuous), low thermal expansion, and excellent UV-VIS transmission. These properties make our tubing ideal for gas chromatography (GC), capillary electrophoresis (CE), high-performance liquid chromatography (HPLC), microfluidic devices, fiber optic ferrules, and laser ablation cells.

Every batch undergoes rigorous inspection using laser interferometry, optical microscopy, and pressure testing to guarantee consistent quality. Our flexible production capability supports both prototyping and bulk orders, with lead times as short as 5–7 working days.

Partner with us for reliable fused silica capillary tube drawing – where precision meets customization. Contact our technical team today to discuss your exact requirements and receive a competitive quotation.

Fused Quartz Glass Features:

Fused quartz glass is a special industrial glass made of silicon dioxide. It is a very good basic material. Quartz glass has a series of excellent physical and chemical properties.

1. High temperature resistance. The softening point of fused quartz glass is about 1730℃ and can be used for long time working under 1100℃~1250℃.  And working at 1450℃ in a short time.

2. Corrosion resistance. In addition to hydrofluoric acid, fused quartz glass is inert to other acids. Its acid resistance is 30 times as ceramic, 150 times as stainless steel. Especially, any other material cannot make a comparison with chemical stability of fused quartz at high temperature

3. The thermal stability is good. Thermal expansion coefficient is extremely small. And it can withstand severe temperature changes such that heating up to 1100℃ and putting it in normal temperature water will not crack.

4. The light transmittance is good. Quartz glass has good transmittance in the whole spectral band from ultraviolet to infrared. The transmittance of the visible light is above 95%. Especially in the ultraviolet spectrum band and the maximum transmittance is over 85%.

5. The electrical insulation performance is good. Resistance value of quartz glass equaling to 10000 times of ordinary glass. It is an excellent electrical insulating material and has good electrical properties even under high temperature.

As a leading China fused quartz glass supplier and manufacturer, we are providing best price as well as quality for all kinds of customized fused quartz products. We are also willing to look for long term partners who are a distributor or wholesaler specialized in fused quartz glass in local.

For prompt quotation, please contact us at below form.

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Fused quartz glasses have the excellent properties for their following features:

• High working temperature
• Thermal shock resistance
• High electrical insulation
• Optical transparency
• Chemical inertness