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| Glass Tubing |
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| Glass Rod | |
| Assortments made from Borosilicate Glass |
Borosilicate Glass
Physical Data
| No. | Physical Performance | Data | Unit |
| 1 | Coefficient of mean linear thermal expansion(20 ) | 3.3 +/- 0.1 | |
| 2 | Transformation temperature | 525 +/- 15 | |
| 3 | Softening point | 820 +/- 10 | |
| 4 | Working point | 1260 +/- 20 | |
| 5 | Density at 20C | 2.23 +/- 0.02 | |
| 6 | Mean thermal conductivity( ) | 1.2 | |
| 7 | Refractive index | 0.92 |
`Chemical Composition
| SiO2 | B2O3 | Na2O+K20 | AL2O3 |
| 81 | 13 | 4 | 2 |
Chemical Data
| Hydrolic resistance at 98C | ISO719-HGB 1 |
| Hydrolic resistance at 121C | ISO720-HGA 1 |
| Acid resistance Class | ISO1776-First Class |
Specification of Tubing
| Outer Diameter (mm) | Wall Thickness (mm) | Wall Thickness (mm) | Wall Thickness (mm) | Wall Thickness (mm) | Wall Thickness (mm) |
| *4 +/- 0.4 | 0.5 +/- 0.1 | 0.8 +/- 0.1 | |||
| *5 +/- 0.4 | 0.5 +/- 0.1 | 0.8 +/- 0.1 | |||
| 6 +/- 0.4 | 0.5 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | |
| 7 +/- 0.4 | 0.5 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | |
| 8 +/- 0.4 | 0.6 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | |
| 9 +/- 0.4 | 0.6 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | |
| 10 +/- 0.4 | 0.6 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | 2.5 +/- 0.3 |
| 11 +/- 0.4 | 0.6 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | 2.5 +/- 0.3 |
| 12 +/- 0.4 | 0.6 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | 2.5 +/- 0.3 |
| 13 +/- 0.4 | 0.6 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | 2.5 +/- 0.3 |
| 14 +/- 0.4 | 0.6 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | 2.5 +/- 0.3 |
| 15 +/- 0.4 | 0.6 +/- 0.1 | 1 +/- 0.1 | 1.5 +/- 0.2 | 2 +/- 0.2 | 2.5 +/- 0.3 |
| 16 +/- 0.4 | 0.7 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.2 | 3 +/- 0.3 |
| 17 +/- 0.4 | 0.7 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.2 | 3 +/- 0.3 |
| 18 +/- 0.4 | 0.7 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.2 | 3 +/- 0.3 |
| 19 +/- 0.4 | 0.7 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.2 | 3 +/- 0.3 |
| 20 +/- 0.5 | 0.8 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.2 | 3 +/- 0.3 |
| 21 +/- 0.5 | 0.8 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.3 | 3 +/- 0.3 |
| 22 +/- 0.5 | 0.8 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.3 | 3 +/- 0.3 |
| 23 +/- 0.5 | 0.8 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.3 | 3 +/- 0.3 |
| 24 +/- 0.5 | 0.8 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.3 | 3 +/- 0.3 |
| 25 +/- 0.5 | 0.8 +/- 0.1 | 1.2 +/- 0.2 | 1.8 +/- 0.2 | 2.4 +/- 0.3 | 3 +/- 0.3 |
| 26 +/- 0.5 | 0.9 +/- 0.1 | 1.4 +/- 0.2 | 2 +/- 0.2 | 2.6 +/- 0.3 | 3.2 +/- 0.3 |
| 27 +/- 0.5 | 0.9 +/- 0.1 | 1.4 +/- 0.2 | 2 +/- 0.2 | 2.6 +/- 0.3 | 3.2 +/- 0.3 |
| 28 +/- 0.5 | 0.9 +/- 0.1 | 1.4 +/- 0.2 | 2 +/- 0.2 | 2.6 +/- 0.3 | 3.2 +/- 0.3 |
| 29 +/- 0.5 | 0.9 +/- 0.1 | 1.4 +/- 0.2 | 2 +/- 0.2 | 2.6 +/- 0.3 | 3.2 +/- 0.3 |
| 30 +/- 0.8 | 1.0 +/- 0.2 | 1.4 +/- 0.2 | 2 +/- 0.2 | 2.6 +/- 0.3 | 3.2 +/- 0.3 |
| 32 +/- 0.8 | 1.0 +/- 0.2 | 1.4 +/- 0.2 | 2 +/- 0.2 | 2.6 +/- 0.3 | 3.2 +/- 0.3 |
| 34 +/- 0.8 | 1.0 +/- 0.2 | 1.4 +/- 0.2 | 2 +/- 0.2 | 2.6 +/- 0.3 | 3.5 +/- 0.3 |
| 36 +/- 0.8 | 1.0 +/- 0.2 | 1.4 +/- 0.2 | 2 +/- 0.2 | 2.8 +/- 0.3 | 3.5 +/- 0.3 |
| 38 +/- 0.8 | 1.0 +/- 0.2 | 1.4 +/- 0.2 | 2 +/- 0.2 | 2.8 +/- 0.3 | 3.5 +/- 0.3 |
| 40 +/- 1.0 | 1.2 +/- 0.2 | 1.6 +/- 0.2 | 2.3 +/- 0.2 | 3.0 +/- 0.3 | 3.8 +/- 0.4 |
| 42 +/- 1.0 | 1.2 +/- 0.2 | 1.6 +/- 0.2 | 2.3 +/- 0.2 | 3.0 +/- 0.3 | 3.8 +/- 0.4 |
| 44 +/- 1.0 | 1.2 +/- 0.2 | 1.6 +/- 0.2 | 2.5 +/- 0.3 | 3.0 +/- 0.3 | 3.8 +/- 0.4 |
| 46 +/- 1.0 | 1.2 +/- 0.2 | 1.6 +/- 0.2 | 2.5 +/- 0.3 | 3.2 +/- 0.3 | 4 +/- 0.4 |
| 48 +/- 1.0 | 1.2 +/- 0.2 | 1.6 +/- 0.2 | 2.5 +/- 0.3 | 3.2 +/- 0.3 | 4 +/- 0.4 |
| 50 +/- 1.0 | 1.4 +/- 0.2 | 1.8 +/- 0.2 | 2.5 +/- 0.3 | 3.5 +/- 0.3 | 4.2 +/- 0.4 |
| 52 +/- 1.0 | 1.4 +/- 0.2 | 1.8 +/- 0.2 | 2.5 +/- 0.3 | 3.5 +/- 0.3 | 4.2 +/- 0.4 |
| 54 +/- 1.0 | 1.4 +/- 0.2 | 1.8 +/- 0.2 | 2.5 +/- 0.3 | 3.5 +/- 0.3 | 4.2 +/- 0.4 |
| 56 +/- 1.0 | 1.4 +/- 0.2 | 1.8 +/- 0.2 | 2.5 +/- 0.3 | 3.5 +/- 0.3 | 4.5 +/- 0.5 |
| 58 +/- 1.0 | 1.4 +/- 0.2 | 1.8 +/- 0.2 | 2.5 +/- 0.3 | 3.5 +/- 0.3 | 4.5 +/- 0.5 |
| 60 +/- 1.5 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 62 +/- 1.5 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 64 +/- 1.5 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 66 +/- 1.5 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 68 +/- 1.5 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 70 +/- 1.5 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 72 +/- 1.5 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 74 +/- 1.5 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 76 +/- 1.5 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 78 +/- 1.6 | 1.6 +/- 0.2 | 2.2 +/- 0.3 | 3.2 +/- 0.4 | 4.2 +/- 0.5 | 5.3 +/- 0.5 |
| 80 +/- 1.8 | 1.8 +/- 0.2 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 82 +/- 1.8 | 1.8 +/- 0.2 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 84 +/- 1.8 | 1.8 +/- 0.2 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 86 +/- 1.8 | 1.8 +/- 0.3 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 88 +/- 1.8 | 1.8 +/- 0.3 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 90 +/- 1.8 | 1.8 +/- 0.3 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 92 +/- 1.8 | 1.8 +/- 0.3 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 94 +/- 1.8 | 1.8 +/- 0.3 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 96 +/- 1.8 | 1.8 +/- 0.3 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 98 +/- 1.8 | 1.8 +/- 0.3 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 100 +/- 1.8 | 1.8 +/- 0.3 | 2.5 +/- 0.3 | 3.5 +/- 0.4 | 5 +/- 0.6 | 6.3 +/- 0.6 |
| 105 +/- 1.8 | 2.5 +/- 0.3 | 3 +/- 0.4 | 3.5 +/- 0.4 | 7 +/- 0.8 | 8.5 +/- 0.8 |
| 110 +/- 2.0 | 2.5 +/- 0.3 | 3 +/- 0.5 | 5 +/- 0.7 | 7 +/- 0.8 | 8.5 +/- 0.8 |
| 115 +/- 2.0 | 2.5 +/- 0.3 | 3 +/- 0.5 | 5 +/- 0.7 | 7 +/- 0.8 | 8.5 +/- 0.8 |
| 120 +/- 2.0 | 2.5 +/- 0.3 | 3 +/- 0.5 | 5 +/- 0.7 | 7 +/- 0.8 | 8.5 +/- 0.8 |
| 125 +/- 2.0 | 3 +/- 0.6 | 5 +/- 0.7 | 7 +/- 0.9 | 9 +/- 0.9 | |
| 130 +/- 2.0 | 3 +/- 0.6 | 5 +/- 0.7 | 7 +/- 0.9 | 9 +/- 0.9 | |
| 135 +/- 2.0 | 3 +/- 0.6 | 5 +/- 0.7 | 7 +/- 0.9 | 9 +/- 0.9 | |
| 140 +/- 2.0 | 3 +/- 0.6 | 5 +/- 0.7 | 7 +/- 0.9 | 9 +/- 0.9 | |
| 145 +/- 2.0 | 3 +/- 0.6 | 5 +/- 0.7 | 7 +/- 0.9 | 9 +/- 0.9 | |
| 150 +/- 2.0 | 3 +/- 0.6 | 5 +/- 0.7 | 7 +/- 0.9 | 9 +/- 1.0 | |
| 155 +/- 2.5 | 5 +/- 0.7 | 7 +/- 0.9 | 9 +/- 1.0 | ||
| 160 +/- 2.5 | 5 +/- 0.8 | 7 +/- 1.0 | 9 +/- 1.0 | ||
| 165 +/- 2.5 | 5 +/- 0.8 | 7 +/- 1.0 | 9 +/- 1.0 | ||
| 170 +/- 2.5 | 5 +/- 0.8 | 7 +/- 1.0 | 9 +/- 1.1 | ||
| 175 +/- 2.5 | 5 +/- 0.8 | 7 +/- 1.0 | 9 +/- 1.1 | ||
| 180 +/- 2.5 | 5 +/- 0.8 | 7 +/- 1.0 | 9 +/- 1.2 | ||
| 185 +/- 3.0 | 5 +/- 0.8 | 7 +/- 1.0 | 9 +/- 1.2 | ||
| 190 +/- 3.0 | 5 +/- 0.9 | 7 +/- 1.0 | 9 +/- 1.2 | ||
| 195 +/- 3.0 | 5 +/- 0.9 | 7 +/- 1.0 | 9 +/- 1.2 | ||
| 200 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 205 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 210 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 215 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 220 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 225 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 230 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 235 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 240 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 245 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 250 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.3 | ||
| 255 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.4 | ||
| 260 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.4 | ||
| 265 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.4 | ||
| 270 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.4 | ||
| 275 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.4 | ||
| 280 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.4 | ||
| 285 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.1 | 9 +/- 1.4 | ||
| 290 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.2 | 9 +/- 1.4 | ||
| 295 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.2 | 9 +/- 1.4 | ||
| 300 +/- 3.0 | 5 +/- 1.0 | 7 +/- 1.2 | 9 +/- 1.4 |
Specification of Rod
| Outer Diameter | Deviation |
Out of Round |
Straightness |  |
| 4 | +/- 0.40 | 0.40 | 3 0/00 | |
| 6 | +/- 0.40 | 0.40 | 3 0/00 | |
| 7 | +/- 0.40 | 0.40 | 3 0/00 | |
| 8 | +/- 0.50 | 0.50 | 3 0/00 | |
| 9 | +/- 0.50 | 0.50 | 3 0/00 | |
| 10 | +/- 0.50 | 0.50 | 3 0/00 | |
| 11 | +/- 0.60 | 0.60 | 3 0/00 | |
| 12 | +/- 0.60 | 0.60 | 3 0/00 | |
| 14 | +/- 0.70 | 0.70 | 3 0/00 | |
| 16 | +/- 0.80 | 0.80 | 3 0/00 | |
| 18 | +/- 0.90 | 0.90 | 3 0/00 | |
| 20 | +/- 1.00 | 1.00 | 3 0/00 | |
| 22 | +/- 1.20 | 1.20 | 3 0/00 | |
| 24 | +/- 1.30 | 1.30 | 3 0/00 | |
| 26 | +/- 1.40 | 1.40 | 3 0/00 | |
| 28 | +/- 1.50 | 1.50 | 3 0/00 | |
| 30 | +/- 1.60 | 1.60 | 3 0/00 | |
| 32 | +/- 1.80 | 1.80 | 3 0/00 | |
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Special order can be taken according to requirement. |
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Standard Length
Glass rod-----------1200 +/- 20 mm
GSGI - Assortments made from Borosilicate Glass
Some other products made from Borosilicate Glass can be supplied
| Measure | VOLUME | 
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| 10 | 25 | 50 | 100 | 250 | 500 | ||
| A | 44 +/- 0.5 | 55 +/- 0.5 | 55 +/- 0.5 | 57 +/- 0.5 | 90 +/- 0.5 | 100 +/- 0.5 | |
| B | 4.0 +/- 0.5 | 4.0 +/- 0.5 | 4.0 +/- 0.5 | 5.0 +/- 0.5 | 5.0 +/- 0.5 | 5.5 +/- 0.5 | |
| C | 19 +/- 0.5 | 24.5 +/- 0.5 | 25 +/- 0.5 | 32 +/- 0.5 | 42 +/- 0.5 | 58 +/- 0.5 | |
| D | 33 +/- 0.5 | 42 +/- 0.5 | 44 +/- 0.5 | 53 +/- 0.5 | 73 +/- 0.5 | 83 +/- 0.5 | |
| E | 49 +/- 0.5 | 60 +/- 0.5 | 62 +/- 0.5 | 75 +/- 0.5 | 102 +/- 0.5 | 113 +/- 0.5 | |
| F | 1.5 +/- 0.5 | 1.5 +/- 0.5 | 1.5 +/- 0.5 | 1.5 +/- 0.5 | 1.5 +/- 0.5 | 1.5 +/- 0.5 | |
| G | 3 +/- 0.5 | 3 +/- 0.5 | 3 +/- 0.5 | 4 +/- 0.5 | 5 +/- 0.5 | 5 +/- 0.5 | |
| H | 30 +/- 0.5 | 39 +/- 0.5 | 42 +/- 0.5 | 48 +/- 0.5 | 71 +/- 0.5 | 78 +/- 0.5 | |
| I | 12 +/- 0.5 | 13 +/- 0.5 | 13 +/- 0.5 | 14 +/- 0.5 | 17 +/- 0.5 | 18 +/- 0.5 | |
| R | 2.0 | 3.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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