Transparent quartz glass tube is a special glass tube made of fused silica with a purity of over 99.95%. With comprehensive physical and chemical properties far exceeding ordinary glass and high borosilicate glass, it is widely rooted in many industries such as chemical, optoelectronic, laboratory, semiconductor, water treatment, etc. It is an indispensable basic accessory for high temperature, optical, and corrosion-resistant working conditions.
From the appearance, the high-quality transparent quartz tube is clear and transparent throughout, with no bubbles, stripes, impurities or black spots on the tube wall. The tube size has extremely high flexibility and can be processed into various forms such as slender straight pipes, thickened short tubes, and viewing cups of different sizes. The two ends of the tube are precision cut and polished, smooth and even, and can be sealed and installed with sealing rings and flanges. Just like the various specifications of quartz tubes in the picture, it can adapt to various observation and casing scenarios.
High temperature resistance and thermal shock resistance are the most iconic advantages of quartz glass tubes. Its coefficient of thermal expansion is extremely low, with a long-term operating temperature of up to 1100 ℃ and the ability to withstand high temperatures above 1200 ℃ in a short period of time; Even when in direct contact with cold water from a high-temperature environment, it is not easy to explode under severe temperature differences, which is incomparable to ordinary glass. Therefore, it is often used as a protective shell for high-temperature furnace tubes, electric heating tubes, and high-temperature reaction observation tubes.
In terms of optical performance, transparent quartz glass has a unique full spectrum transmittance, with a visible light transmittance of over 92%, and can also penetrate deep ultraviolet and near-infrared light. Ordinary borosilicate glass can completely block ultraviolet rays, while dehydroxylated transparent quartz tubes have excellent transmission effects on 254nm bactericidal ultraviolet light, making them specialized materials for ultraviolet disinfection equipment, UV curing lamps, spectral experimental instruments, and laser protective sleeves.
Its chemical stability is also outstanding, except for hydrofluoric acid and high-temperature concentrated alkali, it hardly reacts with various strong acids, organic solvents, and salt solutions. Even in high-temperature fluid environments, pipes will not release harmful substances, making them clean and safe. They can be used for observing the flow state of media in chemical pipeline sight glasses, as well as adapting to scenarios with strict purity requirements such as food water purification and pharmaceutical reagents. In addition, quartz material maintains good insulation at high temperatures and is often used as an insulation protective sleeve for electric heating equipment and optoelectronic instruments.
According to usage requirements, transparent quartz glass tubes are divided into various categories: universal fused quartz tubes have high cost-effectiveness and are mostly used for industrial viewing cups and conventional heating accessories; Low hydroxyl dehydroxylated quartz tubes are mainly designed for UV transparency and are suitable for sterilization and photochemical reactions; High purity optical quartz tube without any defects, specially designed for semiconductor and precision optical instruments; Thick walled quartz cylinders have stronger compressive strength and are suitable for pipeline observation scenarios under pressure.
Relying on the customizable processing characteristics, transparent quartz glass tubes cover a wide range of applications, from small laboratory reaction sleeves and water purification ultraviolet lamps, to chemical reaction kettle sight tubes, photovoltaic semiconductor high-temperature furnace tubes, and more. In industrial and scientific research scenarios where high temperature, transparency, corrosion resistance, and high purity requirements coexist, transparent quartz glass tubes continue to play a key role due to their irreplaceable excellent performance.
