Shipping containers are not all alike. They can differ in size and condition, and some containers have amenities that others do not. For shipping container consumers seeking to judge the structural integrity of the product they’re considering purchasing, understanding the grading system for shipping containers is useful.
There are four basic grades of shipping containers, with regard to structural integrity:
IICL5 – This grade is the most stringent standard of grading and reflects that the 20- or 40-foot shipping container you’re considering is in top condition.
CW – This indicates that the container is cargo-worthy, meaning it is in good enough shape to withstand a sea voyage on a container ship. This is the industry standard for shipping containers.
WWT – This indicates that the container is wind and watertight. These containers are proof against wind and rain, but are not quite suitable for use on an oceangoing vessel for a number of possible reasons. These containers will likely still be quite suitable for temporary storage or similar purposes. Consumers engaged in a construction project using shipping containers may want to use a higher grade container.
AI – This reflects a grade of “as is.” No guarantees are made regarding the container’s durability or strength. These containers are typically older, or may have sustained damage in shipping. Nevertheless, they may be good for a number of purposes and are typically inexpensive to purchase.
When purchasing a shipping container, ascertain for what purpose it is needed and how strong it will need to be to accomplish that purpose. Then purchase a shipping container based on these decisions.