Shipping drums or barrels are commonly used as an alternative to ship liquids internationally via a regular shipping container.
How many drums fit in a 20 ft and a 40 ft dry container?
As shown on the below picture, the internal dimensions of a 20 ft dry container are 2352mm width and 5900mm length and those of a 40 ft dry container are 2352mm width and 12034mm length:
A 20′ ft dry container can hold up to 154 drums with 305mm diameter or 36 drums with 597mm diameter or 21 drums with 762mm diameter, which are the most common used types of shipping drums:
Below you can see a few options for stuffing a 20 ft dry container, depending on the size of the drums: