Feature
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
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
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
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
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