Specifications:

Ф47×1500

Ф58×1800

Material

High boron-silicon (specially hard) glass 3.3

Length(mm)

500 ~ 2200±5mm (special specification per contract)

Weight(kg)

1.73±0.12kg

2.29±0.18kg

Outer tube Dia.(mm)

58 (mm)±0.6mm 

 48(mm)±0.6mm

Inner tube Dia.(mm)

47 (mm)±0.6mm  

37(mm)±0.6mm

Outer tube thickness(mm)

1.6±0.15mm

1.6±0.15mm

Inner tube thickness(mm)

1.6±0.15mm

1.6±0.15mm

Film structure

Gradual change AL-H/AL selective absorbing coated

Sun absorptance

layers≥0.92(AM=1.5) (international standard≥0.86)

Hemisphere emmissivity

≤0.086 (80℃) (international stand≤0.09)

Empty solarization parameters

≥186㎡℃/KW(international standard≥175)

Cover tightly solarization amount

≤3.6MJ/㎡(international stand≤3.8)

Average heat loss coefficient

≤0.86W/㎡(international stand≤0.90)

Interlayer vacuum

≤0.03 Pa (international stand≤0.90)

Heat shock resistance

Under the 25℃ there is no damage after times by using above 90℃ hot water.

Pressure resistance,can bear

0.6Mpa pressure

Hailstibe resustant performance

Cold water by turns and no damage after strike by hailstone with its grain less than Φ25mm.