It didn't help that the dissociation between oil and the 55 gallon drum had already begun. The unit “barrel” was still 42 gallons while the container was 55, so the 55 gallon steel drum kept being pushed farther and farther away from the industry that invented it.

Are all 55 gallon drums the same size?

The average 55 gallon drum is around 35 inches in height and 23 inches in diameter, but there are slight variations.

When was 55 gallon drum invented?

The U.S. 55-gallon steel drum has been an industry standard since it was first patented in 1905. Internationally, it is known as a 208-liter drum, and it is widely used to ship crude oil, among other products.