solar water heater evacuated glass tube
High Resistance to Thermal Shock
High Hydrolytic Resistance
High Chemical Resistance
High Physical performance
Coefficient of mean linear thermal expansion(20,300) 3.3±0.1 10-6K-1
Transformation temperature 525±15
Softening point 820±10
Working point 1260±20
Density at 20 2.23±0.02g/cm3
Mean thermal conductivity(20-100) 1.2w/m2k
Refractive index 0.92
OD from 30-315mm
Length: from 10mm to 4000mm
Process:
cutting
firepolishing
sandblasting
printing
coating
hole drilling