Acetylene Cylinder

Acetylene Cylinder

An acetylene cylinder is a high-pressure container specifically designed for storing and transporting acetylene gas. It is widely used in welding, cutting, chemical synthesis, and other industrial fields. Due to the flammable and explosive nature of acetylene gas, the design and use of acetylene cylinders are subject to strict regulations to ensure safety.

Working Principle

An acetylene cylinder stores acetylene gas by dissolving it in a solvent (usually acetone) and compressing it under high pressure. When in use, a regulator reduces the high-pressure acetylene gas to a lower, usable pressure, and releases it from the cylinder for welding or cutting. The interior of the acetylene cylinder contains a porous material that absorbs the acetone and dissolved acetylene, preventing gas separation and explosion.

Structural Components

The main components of an acetylene cylinder include:

  • Cylinder Body: A container for storing high-pressure acetylene gas, typically made of seamless steel with high strength and pressure resistance.
  • Valve: Installed at the neck of the cylinder to control the release of acetylene gas, usually including shut-off valves and safety valves.
  • Regulator: Connected to the valve, it reduces the high-pressure acetylene gas to a lower, usable pressure, ensuring safe usage.
  • Porous Material: Fills the interior of the cylinder to absorb the solvent (such as acetone) and acetylene gas, preventing gas separation.
  • Safety Devices: Includes burst discs and safety valves to prevent the cylinder from exploding due to overpressure.
  • Protective Cap: Protects the valve and regulator from external impacts, enhancing the safety of the acetylene cylinder.


  • Efficient Storage: Acetylene cylinders can efficiently store large amounts of acetylene gas, meeting industrial production needs.
  • High Portability: Compact design makes the cylinder easy to carry and move, suitable for various settings.
  • High Reliability: Made with high-strength materials and strict manufacturing processes, ensuring durability and safety.
  • High Safety: Equipped with multiple safety devices to prevent leaks and explosions, ensuring safe use.

Application Scenarios

Acetylene cylinders are widely used in the following scenarios:

  • Welding and Cutting: Used in oxy-acetylene welding and cutting operations, providing a high-temperature flame for efficient cutting and welding.
  • Chemical Synthesis: Used as a raw material or auxiliary gas in chemical production processes.
  • Metal Processing: Used for surface treatment and repair of metals, improving the quality of workpieces.
  • Laboratory Research: Provides pure acetylene gas for gas experiments and research in laboratories.

Purchasing Guide

When purchasing an acetylene cylinder, consider the following points:

  • Material and Quality: Choose cylinders made of high-strength, pressure-resistant materials to ensure durability and safety.
  • Capacity and Pressure: Select the appropriate capacity and pressure rating based on actual needs to ensure adequate acetylene gas supply.
  • Brand and Certification: Choose reputable brands and internationally certified products to ensure quality and safety.
  • Accessories and Attachments: Consider the quality and compatibility of accessories like valves, regulators, and safety devices to ensure ease of use.
  • After-Sales Service: Choose suppliers with good after-sales service to ensure maintenance and support during use.


To ensure the proper functioning and extend the service life of an acetylene cylinder, regular maintenance is essential:

  • Regular Inspections: Periodically inspect the cylinder body, valve, regulator, and safety devices to ensure they are intact and functional.
  • Cleaning: Keep the exterior of the cylinder clean to prevent dust and debris from affecting performance.
  • Pressure Testing: Regularly check the internal pressure of the cylinder to ensure normal acetylene gas storage status.
  • Replace Accessories: Periodically replace worn or damaged accessories like valves and regulators to maintain safety.
  • Storage: Store the acetylene cylinder in a cool, dry place away from heat and direct sunlight, and keep it away from flammable materials.


As a crucial device for acetylene gas storage and supply, acetylene cylinders play an important role in welding, cutting, chemical synthesis, and metal processing. Proper selection, use, and maintenance of acetylene cylinders can enhance efficiency, ensure safety, and extend the equipment's lifespan, providing reliable acetylene gas support across various industries.

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