sizes: 6mm-315mm diameter thickness:1mm-10mm standard length:1500mm high quality but low price

I. Performance of the Product 1).  Mechanical Performance Density  ρ   2.23±0.02g/cm³ 2). Thermodynamic Performance Thermal expansion coefficient (0-300) 3.3±0.1×10-6 Softening point  820±10 Strain point 516±10 Caloricity  (20-100) 0.82KJ × (kg×K)-1 Thermal coefficient 1.2W×mk Thermal shock resistance 180K Strengthening type   300K Identical temperature difference 100K Strengthening type 300 K Maximum working temperature Short time(<10h): 500 °C Long time(>10h): 450°C 3).  Chemical Performance  Water resistance  ISO719/DIN12111 HGB1/ISO720 HGA1 Acid resistance  ISO1776/DIN12116 1 Alkali resistance ISO695/DIN52322 A2 4). Optical Property Refractive index Nd: 1.47384 Transmittance spectrum curve 5). Electrical Property Specific resistance lgρ  8.0Ω×cm at 250 Dielectric dissipation fraction tan σ (1 megacycle at 20): 38×10-4 Dielectric constant ε=4.7

clear high glass tubing borosilicate glass 3.3