One establishes a connection between the receptacle and the generator by means of a copper tube.

The company also diversified into copper-based products, including a copper tube manufacturing business and fertilizers.

This type of unit uses turns of copper tube wound into an electromagnetic coil.

The copper tube types used for water service applications commonly uses a flare to iron pipe connection when connecting to the main or the meter.

Oil from a tank in the fuselage was cooled by passing through a spiral copper tube exposed to the slipstream atop the cowling.