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Barrel Definition

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Definition: A barrel is a unit of volume. The volume of a barrel varies according to the industry.

For the petroleum industry: 1 barrel = 42 US gallons = 159 liters

Beer industry: 1 barrel = 31 US gallons = 117 liters

Dry goods: 1 barrel = 7,056 cubic inches = 115.6 liters.

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