Our High-Quality Unprocessed 3.3 Borosilicate Glass Tube is manufactured from premium 3.3 borosilicate glass, renowned for its ultra-low thermal expansion coefficient (3.3 × 10⁻⁶/K). This raw, uncoated tubing offers outstanding resistance to thermal shock, chemical corrosion, and mechanical stress, making it the ideal base material for high-end laboratory, industrial, and technical applications.

Key Features

1. True 3.3 Borosilicate Composition: Extremely low thermal expansion for superior thermal shock resistance (up to 200–300°C ΔT).

2. High Optical Clarity: Crystal-clear transparency with excellent light transmittance.

3. Unprocessed Raw Tube: Smooth inner and outer surfaces, ready for cutting, blowing, grinding, or further processing.

4. Excellent Chemical Durability: Highly resistant to acids, alkalis, and organic solvents.

5. High Mechanical Strength: Good pressure and impact resistance after proper annealing.

6. Wide Size Range: Custom outer diameters (OD), wall thickness, and lengths available for OEM/ODM.

Benefits

1. Withstands rapid temperature changes without cracking

2. Ideal base material for custom glass fabrication and scientific instruments

3. Maintains dimensional stability under extreme conditions

4. Non-toxic and food-grade compatible after processing

5. Long service life in harsh chemical and thermal environments

6. Cost-effective solution for manufacturers and fabricators

Custom Specifications

Ideal Applications

1. Laboratory Glassware & Scientific Instruments

2. Sight Glasses & Level Gauges

3. Pharmaceutical Packaging & Ampoules

4. High-Intensity LED Lighting Tubes

5. Chemical Process Equipment & Reactors

6. Glass Blowing & Artistic Creations

7. Solar Thermal Collectors & Heat Exchangers

8. Custom OEM/ODM Glass Components

Why Choose Our 3.3 Borosilicate Glass Tube?

We specialize in premium borosilicate materials with strict quality control from raw material melting to final inspection. Every tube is produced under precise temperature and dimensional control to ensure consistency and reliability. Whether you need standard stock or fully customized specifications, our experienced team delivers high-quality, cost-effective solutions backed by professional technical support.

FAQWhat does "3.3" mean in borosilicate glass?
It refers to the coefficient of thermal expansion (3.3 × 10⁻⁶/K), indicating excellent resistance to temperature fluctuations compared to ordinary glass.Is this tube ready for use or needs further processing?
This is unprocessed raw tubing — ideal as a base material for cutting, forming, blowing, or assembly in manufacturing.Can it handle direct flame or high heat?
Yes. It has a high softening point and outstanding thermal shock resistance, commonly used in laboratory burners and high-temperature applications.Do you offer customization?
Absolutely. We provide full ODM/OEM services including custom diameters, lengths, wall thickness, and pre-processing (cutting, fire-polishing, etc.).