Precision Glass Tubes & Cylinders with 0.001 mm Tolerance Used in Laboratory, Hospital

Precision glass tubes & cylinders are precisely dimensioned to tolerances less than 0.001 mm (inside diameter & outside diameter) and are made from soda lime, borosilicate or quartz materials. We manufacture our precision bore tubing with optimum precision by heating the glass tube and vacuum heat shrinking it onto a precision mandrel. Combined with a variety of wall thicknesses and individual hot and cold working methods, we can manufacture your product to the size, design and requirements you want.

Specifications of precision glass tubes & cylinders

• Material: soda-lime, borosilicate, quartz.
• Inside diameter: 5–500 mm.
• Outside diameter: 5.1–550 mm.
• Tolerance: 0.001 mm.
• Length: 10–2500 mm.
• Color: white, red, green, pink, yellow and so on.
• Edge handling: polishing.
• Package
  Packaged in 5 layer corrugated cartons or pallet, with foam or bubble wrap.
• Thermal properties

  Table 1: Precision Glass Tubes & Cylinders Thermal Properties

  Material	Soda-lime	Borosilicate	Quartz
  SiO2 Content	60% – 75%	> 81%	> 90%
  Density at 25 °C	2.53 g/cm3	2.23 g/cm3	2.20 g/cm3
  Coefficient of Thermal Expansion	8.6 × 10-6 m/K	3.3 × 10-6 m/K	5.5 × 10-6 m/K
  Softening Point	726 °C	820 °C	1780 °C
  Melting Point	780 °C	1680 °C	2000 °C
  Annealing Point	546 °C	560 °C	1120 °C
  Temperature for Short Time	400 °C	500 °C	1500 °C
  Temperature for Long Time	350 °C	450 °C	1200 °C
  Specific Heat	0.18 J/kg °C	0.9 J/kg °C	670 J/kg °C

Features of precision glass tubes & cylinders

• Tight dimensional tolerance, tolerance can be as small as 0.001 mm.
• Stable chemical property, acid and alkali resistance.
• Can work under high temperature for a long time.
• Various sizes for using.
• Excellent outlooking, various colors.

Applications of precision glass tubes & cylinders

• Used in the medical industry for precise instruments such as gas-tight syringes and acrylic syringe shields.
• Used in laboratories and factories for precise instruments such as flow meters and sight glasses.
• Used in the lighting industry for precise instruments like neon signs.
• Used in the aerospace industry for precise instruments such as glass cylinders for gyroscopes.