Top 6 Things to Inspect When Buying a Used Container

At a Glance

Buying a used shipping container requires a thorough inspection to assess condition, suitability, and long-term value. Understanding grading systems, inspection standards like IICL, and key terms such as CSC plating helps inform decisions. A structured checklist covering structural integrity, internal condition, materials, and documentation ensures the container meets safety and functional requirements. Contact Cabin Solutions today to buy used shipping containers.

Inspecting Used Shipping Containers

Shipping containers have versatile applications to cater to various business needs. Choosing second hand options is a great way to reduce upfront costs for your storage and repurposing needs.

But before you buy a used shipping container, it’s important to conduct a thorough inspection to know that you’re making a wise investment. 

Before doing so, you might want to understand shipping container inspection standards and follow a used shipping container inspection checklist to ensure the containers you buy meet your specific requirements.

In this guide, understand used shipping container grading and why inspections matter, with a handy checklist.

Why Used Shipping Container Inspections Matter

Similar to researching an investment or a new purchase, buying a used shipping container requires careful consideration.

These heavy-duty steel units spend years crossing oceans and transporting freight, often exposed to harsh weather and demanding conditions. While many remain perfectly usable, others can develop rust, dents, or structural weaknesses over time. 

A used shipping container inspection, when done properly, helps you assess:

• Potential issues: Leaks and weakened frames are common and can be hard to spot in photos. 
• Suitability: Some containers may be better for storage than conversion projects.
• Value for money: You may get a container in poor condition for less, but repair and replacements may cost you more in the long run.

Buying the wrong container can be a costly mistake, but you can avoid this by ensuring it’s fit for your purpose.

Shipping Container Inspection Standards

The container industry follows various shipping container inspection standards. The International Institute of Container Lessors (IICL) sets the industry-standard criteria for shipping containers, with a focus on dry van and standard containers.

The IICL 6 criteria checks for:

• Structural integrity
• Cleanliness
• Overall condition

Understanding Used Shipping Container Grading

Suppliers use a grading system to provide a general understanding of a container’s condition. The UK follows a letter-based grading system, usually ranging from Grade A (excellent) to Grade D (damaged or heavily used).

Here’s a guide to what each grade means:

Grade A: The best condition of a used shipping container. This means the unit is structurally sound, wind and watertight, and has only minor wear, such as light dents or surface rust.

Grade B: Such containers show more visible wear and tear, with faded paint and heavier rust, but remain secure and watertight.

Grade C: With extensive rust, large dents, or floor damage, these containers exhibit significant wear and tear. They may be unsuitable for shipping, but they may work as a low-cost, non-critical storage solution.

Grade D: These include the most worn-out used container units. Expect visible damage, corrosion, and/or missing parts. Best to avoid grade D units unless you need something temporary.

Here’s a guide to buying used shipping containers:

Important Terminology in Shipping Container Inspection Standards

In addition to letter-based grading, here are other important terms to know:

• Cargo Worthy (CW): Containers that meet international standards for shipping.
• Wind & Watertight (WWT): Wind and watertight containers protect against wind and rain but may not be structurally sound for transportation.
• As-Is: As the term suggests, these containers are sold exactly as they’re received and often without any guarantees.
• One-Trip: Containers that are as close to brand new, which have typically only made a single journey, usually from overseas manufacturers.

If you still have questions, check out more FAQs here.

What is a CSC Plate?

The Convention for Safe Containers (CSC) plate is a metal plate affixed to the container’s doors that certifies the container meets international safety standards for shipping. CSC plating on the doors of a used container includes information such as a unique ID number, date of manufacture, and the most recent safety inspection.

CSC plating in a container indicates it is structurally sound and safe to load. Without it, shipping companies or port authorities may refuse to move your container. 

A Checklist for Used Shipping Container Inspections

Whether a container has CSC plating or has been graded, you can’t skip the necessary container inspections. Here’s a checklist of things you need to check before buying a used shipping container:

1. External Inspection

Start your inspection by checking the exterior for signs of rust or other damage that could compromise its strength. Pay special attention to the doors, hinges, and seals. If you spot any problems, highlight them to the seller.

2. Internal Conditions

You need to focus on the following areas during inspection:

• Flooring: Inspect the flooring for damage, rot and wear. For containers with wooden flooring, search for signs of mould and soft spots.
• Doors, door gaskets, and locking mechanisms: Check the container doors, gaskets, and locking mechanisms for wear or damage. Make sure they open and close effortlessly, and the gaskets seal correctly.
• Walls and ceilings: Check for rust, corrosion, or other damage, such as punctures and dents. Also, look for signs of previous repairs that indicate hidden issues. If you spot peeling or discolouration, it could mean poor maintenance and water damage.
• Odours and ventilation: Inspect vents for potential structural damage or blockages that could hinder airflow. Check for unusual odours that could indicate water damage, mould or harmful chemicals.

3. Container Material

Most containers are made from weathering steel (COR-TEN A), known for its strength, durability, and weather resistance.

4. Weight Capacity

If you plan to stack containers, check whether the container can withstand stacking and support the weight.

5. Usage History

Container condition directly depends on the trips it has made and the times it has been used. Understand the container grade in addition to a visual inspection.

6. Documentation

It’s good to verify ownership papers and check for claims before you buy a used container. As well as ask for previous inspection reports or certifications to avoid any legal implications in the future.

Buy Used Shipping Containers From Cabin Solutions

Cabin Solutions offers used shipping containers that can be converted into anti-vandal, modular, or storage units to suit your needs. Our quality container range is inspection-ready and suitable for a range of applications.

• Available in varying size options: 10 ft/20ft/40ft x 8ft
• Wind and watertight
• One-trip container ISO rated with CSC plate is also available
• Nationwide delivery

Contact our team today to discuss your container requirements.