Small Diameter Quartz Capillary Tube with Custom Inner Diameter 0.8mm and High

We accept custom orders according to different diameter, thickness, length specifications, or based on your technical drawings.

• High purity: SiO₂ > 99.99%
• Operating Temperature: 1200℃; Soften Temperature: 1730℃
• Excellent thermal stability
• Superior acid and alkali resistance
• High optical transmittance
• Excellent electrical insulation properties

Quartz glass is an acidic material that is inert to most acids except hydrofluoric acid and hot phosphoric acid. It offers excellent acid resistance with superior chemical stability compared to opaque quartz glass, and is non-hygroscopic and non-weathering.

Quartz glass provides high dielectric strength and low conductivity, maintaining excellent dielectric properties even at high temperatures, pressures, and frequencies. With minimal dielectric loss across applied frequency bands, it serves as an outstanding high-temperature dielectric insulation material.

Quartz glass offers unique optical properties, transmitting both far-ultraviolet spectrum and visible light with near-infrared spectrum transmission. It features high temperature resistance, minimal thermal expansion, excellent chemical thermal stability, and optical quality comparable to general optical glass.

The thermal expansion coefficient of quartz glass is exceptionally small—only 1/12 to 1/20 that of ordinary glass. Standard testing involves heating specimens to 1200°C and quenching in cold water repeatedly without cracking.

Quartz glass exhibits superior mechanical properties compared to conventional glass and ceramics, though it maintains some brittleness. While theoretical strength calculations reach approximately 24-31.2 MPa, actual measured strength values are typically lower.

The relaxed structure of quartz allows certain gas ions to diffuse through the network even at high temperatures, with sodium ion diffusion occurring relatively quickly. This characteristic is particularly important for specific applications.

Lianyungang Shengfan Quartz Product Factory specializes in research, development, and manufacturing of quartz plates, tubes, flanges, rings, cuvettes, and quartz instruments. Located in Donghai City, Jiangsu Province—China's Crystal Capital—we are situated 70 km from Lianyungang port with convenient transportation access.

Covering 1,000 square meters with over 30 employees, we achieve annual sales exceeding USD 5.2 million. Guided by our philosophy of Technology Orientation, Quality First, Integrity and Responsibility, and Sustainable Operation, we are committed to establishing an international enterprise with standardized, sustainable operational capabilities.

We maintain business integrity, extensive experience, competitive pricing, and quality assurance while providing excellent after-sales service. We welcome customers to discuss their requirements and negotiate partnerships.