“Heavy tested” containers are containers that are built to transport a load that exceeds the standard weight limit for shipping containers. These containers are typically reinforced with additional materials, such as thicker walls and floors, to ensure that they can safely handle the extra weight.

In some cases, the abbreviation “HT” may be used to refer to “heavy tested” containers. However, it's important to note that the abbreviation “HT” is also commonly used to refer to “hard top” containers, which are a type of open-top container with a lid. This can lead to confusion, so it's important to clarify which type of container is being referred to when using abbreviations.

Not all shipping companies have both heavy tested and hard - top containers in their fleet. It's important to check with the shipping company to ensure that they have the appropriate type of container for your needs.