Material: Glass
Model: 58-1800mm, Weight: over 2.0kgs/pc
Model: 47-1500mm, Weight: over 1.5kgs/pc
Max Temp. 200 degrees
Price Terms:FOB,CIF,EXW
Payment Terms: T/T,Western Union,MoneyGram,L/C
Minimum Order: Negotiatable
Delivery Port: Customized
Contact SupplierPackaging Detail: Our usual package is foam inside and caton outside, or as your request is also OK
Delivery Detail: 10-15 days after PO
Glass Material: High borosilicate 3.3 glass
Structure: All-glass double-tube co-axial structure
External pipe diameter: D=47±0.7mm
D=58±0.7mm
Internal pipe diameter: D=37±0.7mm
D=47±0.7mm
Thickness of vacuum tube: 1.6mm / 1.8mm
Cover glass tube transmittancy: 0.91
Solar selective surface coating sputtering gradient: Al-N / Al
Solar absorption ratio(AM1.5): 0.93
Emission ratio(80°C): 0.06
Sun exposure temperature: ≥200°C
Anti-hail capability:No damage from D25mm hail impact
Coefficient of thermal expansion of glass: 3.3×10-6/°C
Heat loss coefficient: ≤0.90W( m2.°C) / ≤0.85W( m2.°C) / ≤0.80W( m2.°C)