Description
Lead Free Glass Tubes Various properties of lead free glass tube are as below:
Chemical & Physical Property
Softening point: 675± 10degree
Annealing Point: 485± 10degree
Heat Stability: ≥ 120degree
When the Mass resistance is 100MΩ . Cm, temperature of TK-100
≥ 240
Density: 2.63± 0.05
Anti-water Class: III
Thermal Expansion Coefficient: 9.2× 10-7degree (25-380degree)
Strain Point: 455degree
Working Point: 1020degree
Melting Point: 1490degree
Specific Gravity: 2.62 g/cm3 (at 20degree)
Main composition
SiO2 69.9 %
K2O 9.12%
BaO 8.44%
Na2O 7.63%
Al2O3 2.18%
B2O3 2.04%
Application:
Lead-free glass for neon bulb, rice bubbles. Also be used for pulling bubble tubes, test tubes and other handicrafts, the company's product quality, by testing, in line with national standards. Specifications of products according to customer needs.
Specification:
O. D. ToleranceRoundnessDToleranceWall toleranceLStraightness
6.0<D<10.0± 0.2<0.20.8± 0.05<0.101000<2
10.0<D<12.01.0
12.0<D<15.0
15.0<D<18.0± 0.31.2± 0.06
18.0<D<20.0± 0.351.3± 0.08.
Complaint
