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Lead Free Glass Tube

Lead Free Glass Tubes are used as Stem Tube or Flare Tube, Exhaust Tube and Outer Tube for CFL, meeting RoHS regulations.

    Feature

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    Lead-free glass tubes are designed to replicate the working properties of traditional lead glass. Unlike leaded glass, lead-free glass does not blacken, allowing fabricators to utilize “bushier” flames when heating and shaping the tubing. Additionally, it offers increased strength and lighter weight. Importantly, lead-free glass enhances safety by eliminating the risk of lead fumes during fabrication and enabling disposal without concerns about lead waste.

    • Eco-Friendly Composition: Lead-free glass tubes are crafted without lead, aligning with sustainability initiatives and ensuring environmental safety.
    • Hardness and Durability: They boast robustness and resistance to wear, guaranteeing longevity in lighting applications.
    • Chemical Stability: Resilient against various chemicals, lead-free glass tubes are ideal for lighting fixtures and bulbs, ensuring reliable performance.
    • Optical Clarity: Offering exceptional clarity and transparency to visible light, they are indispensable for achieving optimal illumination.

    Application

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    Lead-free glass tubes are applied for flare and exhaust tubing in incandescent and fluorescent lighting products. It is also used extensively for neon signs.

    • Fluorescent Lighting: Widely used in fluorescent lighting systems, lead-free glass tubes enable efficient light transmission for energy-saving illumination.
    • Neon Signs: Employed in crafting vibrant and attention-grabbing neon signs, these tubes ensure clear and uniform illumination in commercial and artistic settings.
    • Incandescent Bulbs: Serving as protective housings for filaments in traditional incandescent bulbs, lead-free glass tubes maintain optical clarity and durability for reliable lighting solutions.
    • LED Encapsulation: Utilised in the encapsulation of LEDs, these tubes safeguard delicate components while allowing efficient light emission, contributing to the performance and longevity of LED lighting systems.

    Available Size

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    Parameter

    Value

    Outer Diameter

    2~26mm

    Wall Thickness

    0.4~1.7mm

    Length

    0.85m, 1.25m, 1.40m, 1.60m and 1.70m

    OEM is acceptable

    Chemical Properties

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    Composition

    SiO2

    BaO

    Na2O

    K2O

    Al2O3

    SrO

    CaO

    MgO

    Li2O

    Fe2O3

    Weight (%)

    67.5±0.5

    9.0±0.5

    7.5±0.5

    4.95±0.55

    4.25±1.25

    3.0±0.5

    2.0±0.5

    1.5±0.5

    1.5±0.5

    0.01~0.05

    *For reference only

    Physical Properties

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    Property

    Value

    Linear Expansion Coefficient (30~380℃)

    (9.10±0.15)×10-6/℃

    Density

    2.62g/cm3

    Softening Point

    675±5℃

    Annealing Point

    485±5℃

    Strain Point

    475±10℃

    Working Point

    1020±10℃

    *For reference only