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High borosilicate glass tubing is a special type of glass tubing that is mainly composed of boron trioxide, silica, and other auxiliary materials. This glass tubing gets its name because of its high content of boron oxides and typically has the following characteristics:

High temperature resistance: High borosilicate glass tubing is generally able to withstand higher temperatures, so it has good stability in high temperature applications. This makes them widely used in laboratories, industrial production, and other applications that need to withstand high temperatures.

Low coefficient of thermal expansion: Due to the presence of boron oxides, high borosilicate glass tubing has a relatively low coefficient of thermal expansion. This means that they change less in shape and size when the temperature changes, reducing the risk of cracking caused by thermal stress.

Chemical stability: High borosilicate glasses generally have high chemical stability and good corrosion resistance to most acids, alkalis, and other chemicals, which makes them very practical in chemical laboratories and industrial production.

Excellent optical properties: High borosilicate glass tubes usually have high transparency and optical quality, and can be used to make optical instruments and experimental devices, such as optical lenses, optical fibers, etc.

In general, borosilicate glass tubing is widely used in various fields due to its unique properties, including chemical laboratories, industrial production, optical instrument manufacturing, etc.