Home > Products > Special Glass > STA high purity borosilicate 3.3 pyrex glass tube Quality Choice
STA high purity borosilicate 3.3 pyrex glass tube Quality Choice
USD $500 - $2,500
/ Piece
10 Pieces(Min.Order)
- 50 Ton / Tons per Month
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Product Details
Place of Origin: | Henan, China | Brand Name: | STA | Model Number: | STA-6JM |
Type: | Clear Quartz Pipe | Color: | pure white | Application: | light glass |
Surface Treatment: | Polished | Shape: | C Shape | Outside Diameter: | 3mm-400mm |
Ozone Content: | Ozone Free |
Product Description
STA high purity borosilicate3.3 pyrex glass tube
Description:
Borosilicate pyrex glass tubing and rods made by us are well-known for their stability and pressure resistance, good workability and high thermal shock resistance. We have a very low rate of thermal expansion, which makes it an excellent material for laboratory glassware and for use in large-scale technological plants in the chemical apparatus industry. Our products are resistant to corrosion and remain absolutely neutral, even to aggressivechemicals, in nearly all fields of chemistry. This brings them a great advantage over other materials. Borosilicate glass is extremely resistant to water, acids, salt solutions, organic substances and halogens. Tubing, capillary and rod also have a high alkali resistance for physical and chemical properties.
Specifications:
Outer Diameter:30mm-400mm
Wall Thickness:0.5mm-10mm
standard length:1500mm or according per requirment
shape: round, flat, tringle, hexagon
Chemical Compositions and Physical and Chemical Properties
Chemical Compositions and Physical and Chemical Properties of Borosilicate Glass Type 3.3 | |||||
composition | SiO2 | B2O3 | R2O | Al2O3 | Fe2O3 |
weight% | 80.3 | 13.0 | 4.2 | 2.4 | 0.035 |
Physics performance | Numerical Value | Unit | |||
Medium coefficient if linear expansion | 3.3±0.1 | 10-6K-1 | |||
Softening point | 820±10 | °C | |||
Viscosity temperature | 510±10 | °C | |||
Uper annealing temperature | 560±10 | °C | |||
Thermal conductivity(20-100°C) | 1.2 | Wm-1K-1 | |||
Temperature for the specific electrical resistance | 240 | °C | |||
20°C Demsity ρ | 2.23±0.02 | g/cm3 | |||
Endure water under 98 °C | ISO0719-HGB1 | / | |||
Endure water under 121 °C | ISO0720-HGA1 | / | |||
Acid-proof test | Na2O≤100 | µg | |||
Alkali-proof test | ISO0695 | / | |||
Working point: 1,260±20°C4)
Softening point: 820±10°C5)
Density at 20°C: 2.23g/cm²6)
Hydrolytic resistance at 98°C: ISO719-HGB17)
Hydrolytic resistance at 121°C: ISO720-HGA18)
Acid resistance class: ISO1776-1 9)
Alkali resistance class: ISO695-A2
Packing pictures
Contact Us
- STA Refractory (Zhengzhou) Co., Ltd.
- Contact nameAlice Wang
- Phone86-371-55180399
- AddressJinshui Zone Zhengzhou,Henan
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