Precision Glass Tube with 0.001 mm Tolerance Used in Laboratory, Hospital

Precision glass tubes ith accurate dimension and 0.001 mm tolerance are made of soda-lime, borosilicate or quartz material. Because of their different sizes, various colors, acid, alkali resistance and low thermal expansion coefficient features, precision glass tubes are widely used with pistons and many precision instruments in laboratory, factory, hospital, and so on.

A short straight polished precision glass tube with a coin diameter thickness wall.

PGT-01: The short polished percision glass tube has good thermal and chemical properties.

Five long straight precision polished glass tubes with heavy wall.

PGT-02: The heavy wall precision glass capillary tubes have strong acid, alkali, high temperature resistance ability.

Specifications of precision glass tube

Table 1: Precision Glass Tubes 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

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

Features of precision glass tube

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 tube

Used with pistons in hospital such as syringe.
Used for precision instruments in laboratory and factory such as burette, capacity bottle.
Used for precision instruments in household such as thermometer.
Used for precision instruments in office such as laser printer.