Solar Vacuum Tubes - High Borosilicate 3.3 Glass, 47mm & 58mm Diameters, Optimal Absorption Coating With 93%-96% Efficiency

Our company is a manufacturer of Solar Vacuum Tubes, solar collectors and solar water heaters in China. We have ISO certification and some other related certifications.We always give our customers best price and good quality! We sincerely hope you will be my next business friends.

Glass material: High borosilicate 3.3 glass
Abosorbing coating property
Structure: CU/SS-ALN(H)/SS-ALN(L)/ALN
Sedment method: 3 high magnertron sputtering plation
Specific absorption: as=0.93-0.96(AM1.5)
Emission ratio: I h=0.04-0.06(80`A 5)
Vacuum tightness: Pa 5.0*10-3Pa
Package: carton

evacuated tubes
Items
Size
Capacity(L)
Absorb area(m2)
20GP/40GP loading qty(pc)

single target vacuum tube
47*1200
1.29
0.07
4200 / 8960

47*1450
1.56
0.08
3360 / 7280

47*1500
1.61
0.09
3360 / 7140

47*1600
1.72
0.09
3220 / 6860

47*1800
1.93
0.10
2940 / 6020

58*1200
2.17
0.90
3000 / 6480

58*1500
2.71
0.11
2400 / 5280

58*1600
2.89
0.12
2280 / 5040

58*1650
2.98
0.12
2280 / 4800

58*1700
3.07
0.13
2280 / 4680

58*1750
3.17
0.13
2160 / 4560

58*1800
3.26
0.14
2160 / 4440

58*1900
3.44
0.14
1920 / 4200

58*2000
3.62
0.15
1920 / 4080

58*2100
3.80
0.16
1920 / 3960

70*1800
5.09
0.17
1500 / 3000

70*2000
5.65
0.19
1300 / 2800

70*2100
5.93
0.20
1300 / 2800