Borosilicate Screw Threaded Glass Tube: GL14, GL18, GL25, GL32, GL45, GL60, GL80 and GL100 Glass Tubes
Borosilicate Screw Threaded Glass Tube: GL14, GL18, GL25, GL32, GL45, GL60 and GL80 Glass Tubes
Borosilicate Screw Threaded Glass Tube is a specialized glass tube with a molded or formed screw-thread connection, designed for applications requiring a secure threaded connection between glass tubes, caps, fittings, reactors, laboratory equipment, and other components.
This product is also commonly called a threaded glass tube, screw threaded glass tube, GL glass tube, GL threaded glass tube, borosilicate threaded tube, threaded reactor tube, or glass reactor tube, depending on the application and industry.
The most common GL screw thread sizes include:
● GL14
● GL18
● GL25
● GL32
● GL45
● GL60
● GL80
Different GL sizes are selected according to the required opening diameter, cap, fitting, sealing system, and equipment design.
Made from borosilicate glass, threaded glass tubes are widely used in laboratories, chemical equipment, glass reactors, reaction systems, sampling equipment, filtration systems, pharmaceutical equipment, analytical instruments, and industrial process equipment.
Jinan JSV Industrial Co., Ltd. supplies customized borosilicate screw threaded glass tubes, GL glass tubes, threaded reactor tubes, and laboratory threaded glass components for international customers.
What Is a Borosilicate Screw Threaded Glass Tube?
A Borosilicate Screw Threaded Glass Tube is a glass tube manufactured from borosilicate glass with a screw-threaded connection at one or both ends.
The threaded section allows the glass tube to connect with compatible:
● Glass caps
● Plastic caps
● Metal fittings
● Sealing rings
● Gaskets
● Adapters
● Connectors
● Laboratory components
● Reactor components
Compared with a conventional plain glass tube, a threaded glass tube provides a more convenient mechanical connection system.
The combination of borosilicate glass + standardized GL thread makes this product particularly useful for laboratory and chemical equipment.
What Does GL Mean on a Glass Tube?
GL is commonly used to identify standardized screw-threaded glass connections used for laboratory and chemical equipment.
A GL designation such as GL45 indicates a particular standardized thread and neck/opening size.
For example:
GL14 → GL18 → GL25 → GL32 → GL45 → GL60 → GL80
represent different sizes.
The GL number should not simply be interpreted as the exact outside diameter of the glass tube. The actual dimensions depend on the relevant standard and component design.
When purchasing a replacement or custom GL threaded glass tube, it is important to confirm:
● GL thread size
● Neck dimensions
● Tube outside diameter
● Tube inside diameter
● Wall thickness
● Overall length
● Thread position
● Sealing method
GL14 Borosilicate Glass Tube
GL14 Glass Tube is a small-size threaded glass component suitable for compact laboratory and chemical equipment.
Potential applications include:
● Small laboratory vessels
● Sampling systems
● Small reaction equipment
● Laboratory connectors
● Analytical equipment
● Small glass assemblies
Common search terms include:
● GL14 Glass Tube
● GL14 Borosilicate Glass Tube
● GL14 Threaded Glass Tube
● GL14 Screw Thread Glass Tube
● GL14 Reactor Tube
GL18 Borosilicate Glass Tube
GL18 Glass Tube is another small threaded glass size used in laboratory and equipment assemblies.
Applications may include:
● Laboratory glassware
● Chemical equipment
● Small reaction systems
● Sampling devices
● Analytical equipment
Search keywords include:
● GL18 Glass Tube
● GL18 Borosilicate Glass Tube
● GL18 Threaded Glass Tube
● GL18 Screw Thread Glass Tube
● GL18 Reactor Tube
GL25 Borosilicate Glass Tube
GL25 Glass Tube provides a larger threaded connection than GL14 and GL18.
It can be used in:
● Laboratory equipment
● Chemical reactors
● Sampling equipment
● Glass vessels
● Reaction systems
● Industrial laboratory equipment
Common searches:
● GL25 Glass Tube
● GL25 Borosilicate Glass Tube
● GL25 Threaded Glass Tube
● GL25 Screw Thread Glass Tube
● GL25 Reactor Tube
GL32 Borosilicate Glass Tube
GL32 Glass Tube is used for medium-sized threaded glass connections.
Potential applications include:
● Laboratory reactors
● Chemical equipment
● Glass vessels
● Reaction tubes
● Sampling systems
● Process equipment
Common search terms:
● GL32 Glass Tube
● GL32 Borosilicate Glass Tube
● GL32 Threaded Glass Tube
● GL32 Screw Thread Glass Tube
● GL32 Reactor Tube
GL45 Borosilicate Glass Tube
GL45 is one of the most widely recognized GL thread sizes in laboratory glassware.
GL45 Borosilicate Glass Tubes are used in various laboratory and chemical applications.
Potential applications include:
● Laboratory reactors
● Chemical reaction systems
● Storage vessels
● Sampling equipment
● Laboratory bottles
● Filtration systems
● Process equipment
Customers may search for:
● GL45 Glass Tube
● GL45 Borosilicate Glass Tube
● GL45 Threaded Glass Tube
● GL45 Screw Thread Glass Tube
● GL45 Reactor Tube
● GL45 Laboratory Glass Tube
● GL45 Glass Bottle Tube
Because GL45 is widely used in laboratory equipment, it is an important keyword for international SEO.
GL60 Borosilicate Glass Tube
GL60 Glass Tube is a larger threaded glass connection used for equipment requiring a larger opening.
Potential applications include:
● Laboratory reactors
● Industrial laboratory equipment
● Chemical processing equipment
● Large glass vessels
● Reaction systems
● Process observation equipment
Common keywords include:
● GL60 Glass Tube
● GL60 Borosilicate Glass Tube
● GL60 Threaded Glass Tube
● GL60 Screw Thread Glass Tube
● GL60 Reactor Tube
GL80 Borosilicate Glass Tube
GL80 Glass Tube is a larger GL threaded glass component for applications requiring a larger threaded connection.
Potential applications include:
● Large laboratory reactors
● Chemical equipment
● Large glass vessels
● Industrial process equipment
● Reaction systems
Search terms include:
● GL80 Glass Tube
● GL80 Borosilicate Glass Tube
● GL80 Threaded Glass Tube
● GL80 Screw Thread Glass Tube
● GL80 Reactor Tube
Borosilicate Threaded Glass Tube for Laboratory Use
One of the most important applications of threaded glass tubes is laboratory equipment.
Laboratories often require glass components that provide:
● Chemical resistance
● Thermal resistance
● Good transparency
● Dimensional stability
● Easy assembly
● Reliable sealing
Borosilicate glass is widely used for laboratory equipment because of its low thermal expansion and good resistance to thermal shock and many chemicals.
Threaded glass tubes can be incorporated into laboratory systems such as:
● Reaction equipment
● Sampling equipment
● Gas systems
● Filtration systems
● Laboratory vessels
● Chemical experiments
● Analytical equipment
Threaded Glass Tube as a Reactor Tube
Some customers refer to a screw-threaded glass tube as a Reactor Tube or Threaded Reactor Tube, particularly when it forms part of a laboratory chemical reaction system.
A threaded reactor tube can be used for:
● Chemical reactions
● Heating experiments
● Gas-liquid reactions
● Sample preparation
● Catalytic experiments
● Laboratory synthesis
● High-temperature experiments
The GL threaded connection can allow the reactor tube to connect with compatible caps, adapters, fittings, or other laboratory components.
Common search terms include:
● Reactor Tube
● Glass Reactor Tube
● Borosilicate Reactor Tube
● Threaded Reactor Tube
● Threaded Glass Reactor Tube
● GL Reactor Tube
● GL45 Reactor Tube
● GL Threaded Reactor Tube
Borosilicate Glass Reactor Tube
A Borosilicate Glass Reactor Tube is a glass tube designed for chemical reaction or laboratory process applications.
Depending on the design, the tube may have:
● GL thread
● Plain end
● Flanged end
● Ground glass connection
● Screw-thread connection
● Special fittings
Threaded versions are particularly useful when a removable connection is required.
Applications include:
● Laboratory synthesis
● Chemical reactions
● Catalytic testing
● Heating reactions
● Gas experiments
● Sample preparation
● Small-scale chemical processing
Why Use Borosilicate Glass for Threaded Tubes?
Borosilicate glass is widely selected for laboratory and chemical equipment because of its useful physical and chemical properties.
Low Thermal Expansion
Borosilicate glass has a relatively low coefficient of thermal expansion.
This helps reduce thermal stress during temperature changes.
Good Thermal Shock Resistance
It can withstand many heating and cooling cycles better than ordinary soda-lime glass.
Chemical Resistance
Borosilicate glass provides good resistance to many acids, organic chemicals, and laboratory reagents.
High Temperature Capability
Borosilicate glass can be used in many elevated-temperature laboratory and industrial applications when the design and operating conditions are appropriate.
Transparency
The transparent glass allows operators to observe:
● Samples
● Liquids
● Gas bubbles
● Chemical reactions
● Material movement
This makes glass particularly valuable for laboratory reactors and reaction tubes.
Threaded Glass Tube for Chemical Applications
Borosilicate threaded glass tubes are suitable for many chemical applications.
Potential uses include:
● Chemical reaction systems
● Laboratory synthesis
● Sampling
● Chemical storage
● Filtration
● Gas-liquid contact
● Reaction monitoring
● Process development
The transparent construction allows direct visual observation of the process.
Threaded Glass Tube for Sampling
Threaded glass tubes can be incorporated into sampling systems where a secure removable connection is required.
Potential applications include:
● Chemical sampling
● Laboratory sampling
● Process sampling
● Gas sampling
● Liquid sampling
● Analytical sample preparation
The threaded connection allows the component to be opened, cleaned, and reassembled more conveniently than permanently sealed glass components.
GL Threaded Glass Tube with Cap
GL threaded glass tubes can be used with compatible caps and sealing components.
Depending on the application, the cap may be made from:
● PP
● PTFE
● PFA
● Other engineering plastics
● Metal
A sealing liner or gasket may be used between the cap and glass to provide the required sealing performance.
This combination is widely used in laboratory and chemical equipment.
GL45 Glass Tube with Screw Cap
GL45 is a particularly common size in laboratory applications.
A GL45 threaded glass tube can be designed to work with compatible GL45 caps and sealing components.
Potential applications include:
● Laboratory reactors
● Chemical containers
● Reaction vessels
● Storage systems
● Sampling equipment
● Laboratory process equipment
Common searches include:
● GL45 Glass Tube with Cap
● GL45 Borosilicate Glass Tube
● GL45 Threaded Glass Tube
● GL45 Glass Reactor Tube
● GL45 Screw Cap Glass Tube
Custom Borosilicate Screw Threaded Glass Tube
Different equipment manufacturers may require non-standard tube dimensions even when using a standard GL thread.
Jinan JSV Industrial Co., Ltd. can supply customized threaded borosilicate glass tubes according to customer requirements.
Customization may include:
● GL14
● GL18
● GL25
● GL32
● GL45
● GL60
● GL80
● Other GL thread sizes
● Tube outside diameter
● Tube inside diameter
● Wall thickness
● Overall length
● Thread position
● End configuration
● Sealing surface
● Custom shape
Customers can provide a drawing, sample, or technical specification for evaluation.
Borosilicate Screw Threaded Glass Tube Manufacturing
The manufacturing process depends on the required GL thread and tube design.
Typical processes may include:
1. Selection of borosilicate glass tubing
2. Cutting to required length
3. Heating and forming
4. Formation of the threaded neck or connection
5. Dimensional processing
6. Edge finishing
7. Cleaning
8. Inspection
9. Packaging
The threaded section is especially important because it must be compatible with the corresponding cap or fitting.
Dimensional consistency is therefore important for OEM production and replacement applications.
Threaded Glass Tube Dimensions
When ordering a threaded glass tube, customers should provide as much dimensional information as possible.
Important parameters include:
GL Thread Size
For example:
● GL14
● GL18
● GL25
● GL32
● GL45
● GL60
● GL80
Tube Diameter
Specify:
● Outside diameter
● Inside diameter
Wall Thickness
Wall thickness may affect:
● Mechanical strength
● Thermal performance
● Internal volume
● Application temperature
Overall Length
The required tube length should be specified according to the equipment design.
Thread Position
The threaded section may be located at:
● One end
● Both ends
● A specified position
Threaded Glass Tube for OEM Applications
OEM manufacturers may require large quantities of identical glass tubes.
Jinan JSV Industrial Co., Ltd. can supply threaded borosilicate glass tubes for:
● Laboratory equipment manufacturers
● Chemical equipment manufacturers
● Glass reactor manufacturers
● Scientific instrument manufacturers
● Analytical equipment manufacturers
● Pharmaceutical equipment manufacturers
● Industrial equipment manufacturers
OEM requirements may include:
● Standard GL thread
● Custom dimensions
● Stable tolerances
● Batch consistency
● Custom packaging
● Inspection requirements
How to Choose a Borosilicate Screw Threaded Glass Tube
Before ordering, consider the following factors.
1. GL Thread Size
Confirm whether the application requires:
GL14, GL18, GL25, GL32, GL45, GL60, GL80, or another size.
2. Tube Dimensions
Provide:
● OD
● ID
● Wall thickness
● Length
3. Operating Temperature
Confirm the normal and maximum operating temperature.
4. Chemical Medium
Specify the chemicals or process medium contacting the glass.
5. Pressure
If the tube is used in a pressurized system, provide the operating and design pressure.
6. Connection
Confirm the compatible:
● Cap
● Fitting
● Adapter
● Gasket
● Sealing system
7. Quantity
For OEM applications, provide the expected annual or order quantity.
Borosilicate Screw Threaded Glass Tube Manufacturer in China
International customers may search for this product using many different keywords.
Laboratory buyers may search for:
Borosilicate Threaded Glass Tube Manufacturer China
Chemical equipment manufacturers may search for:
Threaded Glass Reactor Tube Supplier China
Laboratory distributors may search for:
GL45 Glass Tube Manufacturer China
Customers looking for a specific size may search for:
● GL14 Glass Tube Manufacturer
● GL18 Glass Tube Manufacturer
● GL25 Glass Tube Manufacturer
● GL32 Glass Tube Manufacturer
● GL45 Glass Tube Manufacturer
● GL60 Glass Tube Manufacturer
● GL80 Glass Tube Manufacturer
Jinan JSV Industrial Co., Ltd. supplies borosilicate screw threaded glass tubes and customized GL glass components for international laboratory, chemical, analytical, and industrial equipment customers.
Common SEO Keywords for Borosilicate Screw Threaded Glass Tubes
Main Keywords
● Borosilicate Screw Threaded Glass Tube
● Borosilicate Threaded Glass Tube
● Screw Thread Glass Tube
● Threaded Glass Tube
● Glass Tube with Thread
● GL Glass Tube
● GL Threaded Glass Tube
● Borosilicate GL Glass Tube
● Threaded Borosilicate Glass Tube
Laboratory Keywords
● Laboratory Threaded Glass Tube
● Laboratory Borosilicate Glass Tube
● Laboratory Screw Thread Glass Tube
● GL Laboratory Glass Tube
● Glass Tube for Laboratory
● Threaded Laboratory Glass Tube
● Laboratory Reactor Tube
● Borosilicate Laboratory Reactor Tube
Reactor Keywords
● Glass Reactor Tube
● Borosilicate Glass Reactor Tube
● Threaded Reactor Tube
● Threaded Glass Reactor Tube
● Borosilicate Threaded Reactor Tube
● GL Reactor Tube
● GL45 Reactor Tube
● Laboratory Glass Reactor Tube
● Chemical Reactor Glass Tube
GL Size Keywords
● GL14 Glass Tube
● GL18 Glass Tube
● GL25 Glass Tube
● GL32 Glass Tube
● GL45 Glass Tube
● GL60 Glass Tube
● GL80 Glass Tube
● GL14 Borosilicate Glass Tube
● GL18 Borosilicate Glass Tube
● GL25 Borosilicate Glass Tube
● GL32 Borosilicate Glass Tube
● GL45 Borosilicate Glass Tube
● GL60 Borosilicate Glass Tube
● GL80 Borosilicate Glass Tube
Application Keywords
● Chemical Reaction Glass Tube
● Laboratory Reaction Tube
● Glass Tube for Chemical Reaction
● Glass Tube for Reactor
● Glass Tube for Chemical Equipment
● Glass Tube for Laboratory Equipment
● Glass Tube for Sampling
● Glass Tube for Analytical Equipment
● Glass Tube for Chemical Processing
China Manufacturer Keywords
● Borosilicate Threaded Glass Tube Manufacturer China
● Borosilicate Threaded Glass Tube Supplier China
● Screw Thread Glass Tube Manufacturer China
● Threaded Glass Tube Manufacturer China
● Threaded Glass Tube Supplier China
● GL Glass Tube Manufacturer China
● GL45 Glass Tube Manufacturer China
● GL45 Glass Tube Supplier China
● GL Reactor Tube Manufacturer China
● Borosilicate Reactor Tube Manufacturer China
● Threaded Reactor Tube Supplier China
● Custom Threaded Glass Tube Manufacturer China
● OEM Threaded Glass Tube Supplier China
Frequently Asked Questions
What is a Borosilicate Screw Threaded Glass Tube?
It is a borosilicate glass tube with a standardized or customized screw-threaded connection, commonly used in laboratory, chemical, reactor, sampling, and industrial equipment.
What does GL mean on a glass tube?
GL is a designation commonly used for standardized screw-threaded glass connections. Common sizes include GL14, GL18, GL25, GL32, GL45, GL60, and GL80.
What are the common GL glass tube sizes?
Common GL sizes include GL14, GL18, GL25, GL32, GL45, GL60, and GL80. Other sizes or customized dimensions may also be available depending on the application.
What is GL45 Glass Tube used for?
GL45 glass tubes are commonly used in laboratory and chemical equipment, including reaction systems, sampling equipment, glass vessels, storage systems, and laboratory reactors.
Can a threaded glass tube be used as a reactor tube?
Yes. Depending on its dimensions, glass type, pressure, temperature, and connection design, a threaded borosilicate glass tube can be used as a laboratory reactor tube or threaded reactor tube.
Why is borosilicate glass used for reactor tubes?
Borosilicate glass offers low thermal expansion, good thermal shock resistance, good chemical resistance, and excellent transparency, making it suitable for many laboratory and chemical reaction applications.
Can the GL thread be customized?
Standard GL sizes such as GL14, GL18, GL25, GL32, GL45, GL60, and GL80 are commonly used. Customized dimensions and configurations can also be evaluated according to the customer’s drawing and application.
Can you supply GL glass tubes with caps?
Compatible caps, sealing components, and complete assemblies can be evaluated according to the required GL thread size and application.
Can you manufacture customized threaded borosilicate glass tubes?
Yes. Jinan JSV Industrial Co., Ltd. supplies customized threaded borosilicate glass tubes according to drawings, samples, dimensions, GL thread size, wall thickness, length, and application requirements.
Where can I buy Borosilicate Screw Threaded Glass Tubes from China?
International customers can source threaded borosilicate glass tubes from specialized Chinese glass manufacturers and suppliers. Jinan JSV Industrial Co., Ltd. supplies GL14, GL18, GL25, GL32, GL45, GL60, GL80, and customized borosilicate threaded glass tubes for laboratory, chemical, reactor, analytical, and industrial applications.
Conclusion
Borosilicate Screw Threaded Glass Tubes combine the chemical and thermal properties of borosilicate glass with convenient threaded connections.
They are available in common GL sizes including:
GL14 | GL18 | GL25 | GL32 | GL45 | GL60 | GL80
Applications include:
● Laboratory equipment
● Chemical reactors
● Reactor tubes
● Reaction systems
● Sampling equipment
● Analytical instruments
● Chemical processing equipment
● Pharmaceutical equipment
● Industrial process equipment
Depending on the application, customers may call the same type of product a Borosilicate Threaded Glass Tube, Screw Thread Glass Tube, GL Glass Tube, GL45 Glass Tube, Threaded Reactor Tube, Glass Reactor Tube, or Laboratory Threaded Glass Tube.
For international buyers searching for a Borosilicate Screw Threaded Glass Tube Manufacturer, GL Glass Tube Supplier, GL45 Glass Tube Manufacturer, Threaded Reactor Tube Supplier, or Custom Laboratory Glass Tube Manufacturer in China, Jinan JSV Industrial Co., Ltd. provides customized borosilicate threaded glass tube solutions based on customer drawings, samples, GL thread specifications, dimensions, and application requirements.