What method is used to secure flat-bottomed compressed gas containers?

The method used to secure flat-bottomed compressed gas containers is nesting. Nesting refers to the practice of placing one container within another, typically when they have a similar shape that allows them to fit together. This method can help in stabilizing the containers, minimizing the risk of tipping over, and ensuring that they are stored compactly and safely.

In the context of compressed gas containers, nesting can provide a means of efficient storage while still allowing for proper ventilation and ease of access. This approach is particularly useful in settings where space is limited and safety is paramount, as it reduces the risk of accidents that could arise from unsecured containers.

Other methods, although used for different types of containers or in various securement practices, do not provide the same benefits as nesting in this specific context.