We are offering evacuated glass tubes (non pressurized).
All-glass three target vacuum tube
1) high temperature resistance
2) anti-cold
3) efficient absorption and long lifetime
all-glass three target vacuum tube
technical data:
structure
all-glass concentric dual tube geomer
glass material
high borosilicate 3.3 glass
outer tube diameter and thickness
φ=47±0.7mm & =1.6±0.15mm
φ=58±0.7mm & =1.6±0.15mm
φ=70±0.7mm & =1.6±0.15mm
inter tube diameter and thickness
φ=37±0.7mm & =1.6±0.15mm
φ=47±0.7mm & =1.6±0.15mm
φ=58±0.7mm & =1.6±0.15mm
tube length
800mm,1200mm,1500mm,1600mm,
1800mm,1900mm,2000mm,2100mm,etc
absorbing
coating
properties
coating material:
cuss-aln(h)ss-aln(l)aln
sediment method:
three target magnetron sputtering plation
absorptance:
= 0.92-0.96(am1.5)
emittance:
=0.04-0.06(80°c±5°c)
vacuum:
p ≤ 5.0 × 10-3 (pa)
stagnation temperature(temperature inside of empty evacuated tubes):
260-300°c
average heat loss:
ult0.4-0.6w(m2.°c)
lifetime:
15years
hail resistance:
25mm
pressure-endure:
1mpa

We are offering evacuated glass tubes (non pressurized).
All-glass three target vacuum tube
1) high temperature resistance
2) anti-cold
3) efficient absorption and long lifetime
all-glass three target vacuum tube
technical data:
structure
all-glass concentric dual tube geomer
glass material
high borosilicate 3.3 glass
outer tube diameter and thickness
φ=47±0.7mm & =1.6±0.15mm
φ=58±0.7mm & =1.6±0.15mm
φ=70±0.7mm & =1.6±0.15mm
inter tube diameter and thickness
φ=37±0.7mm & =1.6±0.15mm
φ=47±0.7mm & =1.6±0.15mm
φ=58±0.7mm & =1.6±0.15mm
tube length
800mm,1200mm,1500mm,1600mm,
1800mm,1900mm,2000mm,2100mm,etc
absorbing
coating
properties
coating material:
cuss-aln(h)ss-aln(l)aln
sediment method:
three target magnetron sputtering plation
absorptance:
= 0.92-0.96(am1.5)
emittance:
=0.04-0.06(80°c±5°c)
vacuum:
p ≤ 5.0 × 10-3 (pa)
stagnation temperature(temperature inside of empty evacuated tubes):
260-300°c
average heat loss:
ult0.4-0.6w(m2.°c)
lifetime:
15years
hail resistance:
25mm
pressure-endure:
1mpa