BOROSILICATE GLASS TUBES

Technical Data:I. Performance of the Product1). Mechanical PerformanceDensity ρ2.23±0.02g/cm³2).Thermodynamic PerformanceThermal expansion coefficient(0-300) 3.3±0.1×10-6Softening point820±10Strain point516±10Caloricity(20-100) 0.82KJ × (kg×K)-1Thermal coefficient1.2W×mkThermal shock resistance180KStrengthening type300KIdentical temperature difference100KStrengthening type300 KMaximum working temperatureShort time(<10h):500°CLong time(>10h):450°C3). Chemical PerformanceWater resistanceISO719/DIN12111 HGB1/ISO720 HGA1Acid resistanceISO1776/DIN12116 1Alkali resistanceISO695/DIN52322 A24).Optical PropertyRefractive indexNd:1.47384Transmittance spectrum curve5).Electrical PropertySpecific resistance lgρ8.0Ω×cm at 250Dielectric dissipation fractiontan σ (1 megacycle at 20):38×10-4Dielectric constantε=4.7II.Sizes Thickness mm1.502.253.003.805.006.007.502.002.753.304.005.506.508.00Thickness Tolerance+/-0.2+/-0.3Dimension600mm*1200mm (max.800mm*2000mm)Size ToleranceL<=1m1m<L<=2m+/-1mm+/-2mmWe also do the follows to customers’ requirements: Cutting Round corner Round edge Surface fine polishing Hole drilling Coating Surface printing and sand blasting Thermal bending