Tubular Sight Glass

WT Glass provide high quality borosilicate tubular sight glass with various sizes of OD4mm to 315mm, thickness 0.8 to 12mm, length 9.5mm to 1500mm.

Additional information

Material

Borosilicate Glass

Outer diameter

4mm to 315mm

Thickness

0.8 to 12mm

Length

9.5mm to 1500mm; Glass can be cut to any desired length needed

Edge

Grind or Polish

产品生产工艺

Product Details

Size and Dimentions

Size: OD4mm to 315mm; Thickness 0.8 to 12mm; Length 9.5mm to 1500mm

Edge finishing: fire polished edge; grind edge; polished edge; thread edge; closed bottom.

Surface finishing: sandblasting; printing.

 

Material: Borosilicate Glass

Technique Specification for Borosilicate Glass

Chemical Performance
1 SiO2 B2O3 Na2O Al2O3 Fe2O3
80.3% 13.04% 4.17% 2.44% 0.027%
2 Water resistance ISO0719 I
3 Acid resistance ISO0195 I
4 Alkali resistance ISO0695 II
Mechanical Performance
5 Density ρ 2.2250g/cm3 @24℃
6 Bending Strength 150N/mm2
7 Surface compressive stress 90N/mm2
8 Young’s modulus 64 GPa
9 Poisson’s ratio 0.2
10 Hardness 5.5 Mohs, (470 Knopp, 580 Vickers)
11 Elastic Modulus 67KNmm-2
Thermodynamic Performance
12 Thermal Expansion Coefficient (0-300℃)(20-300) ≤3.3*10-6K-1   
13 Softening Point 820±10℃
14 Strain Point 520±10℃
15 Annealing Point 560±10℃
16 Caloricity (20-100℃) 0.83KJ* (kgxK)-1
17 Thermal Coefficient 1.2WxmxK-1
18 Thermal Shock Resistance 180K
19 Max Working Temperature -70 up to 500℃   Short time (<10h)
20 Max Working Temperature -70 up to 280℃   Long time (>10h)
Eletric Property
21 Electric Volume Resistivity 8.6×1013Ωxcm (at 25℃)

1.4×106Ωxcm (at 300℃)

1.4×10 6Ωxcm (at 300℃)

22 Dielectric Dissipation Fraction 38×10-4 (at 1MHz, 20℃)
23 Dielectric Constant εr 4.6 (at 1MHz, 20℃)
Optical Property
24 Refractive Index 1.4714 @24℃

 

Application

  • Tubular sight glass; Industry
  • Lighting
  • Candle holder; Jugs and carafes

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We will contact you within 1 working day, please pay attention to the email from info@wtglass.com 

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