Gas burner

The flame is generally used for the heat, infrared radiation, or visible light it produces.

Some burners, such as gas flares, dispose of unwanted or uncontainable flammable gases.

The gas burner has many applications such as soldering, brazing, and welding, the latter using oxygen instead of air for producing a hotter flame, which is required for melting steel.

Chemistry laboratories use natural-gas fueled Bunsen burners.

For higher temperatures, acetylene is commonly used in combination with oxygen.