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Borosilicate Glass Tube

Borosilicate glass has high durability, high thermal shock resistance, and high electrical resistivity.

    Feature

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    With a smalthermaexpansion coefficient, excellent thermastability, chemicastability, and electricaproperties, borosilicate glass exhibits outstanding characteristics such as resistance to chemicaerosion, thermashock, and mechanicastress.

    • ThermaResistance: Borosilicate glass tubes exhibit high thermaresistance, allowing them to withstand extreme temperatures without cracking or shattering, ensuring reliable performance in lighting applications.
    • Durability: With excellent mechanicastrength, borosilicate glass tubes are highly durable and resistant to breakage, providing long-lasting reliability in demanding lighting environments.
    • ChemicaStability: Borosilicate glass tubes demonstrate remarkable chemicastability, resisting corrosion from acids, alkalis, and other chemicals commonly encountered in lighting applications, ensuring extended service life.
    • OpticaClarity: Known for their exceptionaopticaclarity, borosilicate glass tubes offer superior light transmission, minimising light loss and providing bright, uniform illumination in lighting fixtures.

    Application

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    Primarily used in HID lighting applications. Borosilicate tubing seals well to tungsten leadwires, making it ideal for flare and exhaust tubing mainly in HID lighting applications. It can also be used in applications such as LCD backlighting and fuses.

    • LED Encapsulation: Borosilicate glass tubes are commonly used for encapsulating LED components in lighting systems, providing thermal stability and protection while maintaining optical clarity, ensuring efficient light emission and longevity.
    • Incandescent Lamps: Borosilicate glass tubes serve as protective housings for filaments in traditional incandescent lamps, offering thermal resistance and durability, ensuring optimal performance and longevity.
    • Halogen Lamps: In halogen lamps, borosilicate glass tubes are utilised for their ability to withstand high temperatures generated by halogen bulbs, ensuring safe and reliable operation while maintaining optical clarity for efficient light transmission.
    • Specialised Lighting Solutions: Borosilicate glass tubes are also used in specialised lighting solutions such as UV lamps and infrared heaters, where their thermal resistance, durability, and optical properties are leveraged to achieve specific lighting requirements, including precise wavelength control and efficient heat emission.

    Available Size

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    Parameter

    Value

    Outer Diameter

    4.5~31.5mm

    Wall Thickness

    0.5~8.0mm

    Length

    ≤1.8m

    OEM is acceptable

    Chemical Properties

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    Composition

    SiO2

    B2O3

    R2O

    Al2O3

    Fe2O3

    Weight (%)

    80.3

    13.0

    4.1

    3.4

    0.035

    *For reference only

    Physical Properties

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    Property

    Value

    Linear Expansion Coefficient (30~380℃)

    (3.3±0.1)×10-6/℃

    Density

    2.23±0.02g/cm3

    Softening Point

    820±10℃

    Viscosity Point

    510±10℃

    Annealing Point

    560±10℃

    Heat Stability

    ≥240℃

    Thermal Conductivity (20~100℃)

    1.2W/m℃

    *For reference only