Complete Buying Guide: How to Choose a New 20-Foot Shipping Container (One Trip)

Why choose a new 20-foot shipping container over a used one?

The new 20-foot shipping container, often called "One Trip" or "Premier Voyage," has made only one cargo transport before being sold. It differs radically from classic used containers in its near-flawless aesthetic and structural condition: very few scratches, no perforating corrosion, and full structural integrity. For a buyer, this choice means a higher initial investment, but it is justified by a longer lifespan, better watertightness, and a clean professional appearance.

A used container, even in good condition, has often undergone several years of intensive service, with risks of deformation, surface rust, and worn seals. The new "One Trip" container, by contrast, offers a sound base, ideal for demanding outdoor use, whether for storing sensitive equipment, events, or conversion into a technical room. In addition, its original paint and equipment (lockbox, forklift pockets) are intact, which reduces immediate maintenance costs.

Key technical specifications of the new 20-foot container

Materials and construction

This container is built from Corten steel, a low-alloy steel that offers significantly higher resistance to atmospheric corrosion than ordinary steel. Thanks to its chemical composition (copper, chromium, nickel, phosphorus), it develops a protective layer of surface rust that slows the progression of corrosion in depth. This feature is essential for prolonged outdoor use, whether for storage, housing, or any other application exposed to the weather.

The floor is made of 28 mm thick marine plywood, a dense, moisture-resistant material capable of supporting heavy loads and frequent traffic. It is treated against mold and insects and fixed to steel cross members. The side walls and roof are made of corrugated steel sheet, which provides significant structural rigidity while remaining relatively lightweight. The front and rear faces are reinforced with steel uprights.

The rear doors are double-leaf, equipped with container locks (four vertical locking bars) and EPDM rubber seals. These seals ensure water and air tightness, protecting the contents from weather and dust.

Dimensions and weight

The standard dimensions of a 20-foot container are as follows: external length 6.058 m, external width 2.438 m, external height 2.591 m. Internal dimensions are approximately 5.898 m long, 2.352 m wide, and 2.393 m high. The internal volume capacity is about 33.2 m³. The tare weight is generally between 2,200 and 2,400 kg, and the maximum payload can reach about 28,000 kg, depending on the manufacturer's exact specifications. These values may vary slightly from one container to another, but they comply with ISO tolerances.

Standard equipment

This container is equipped with a security lockbox. This is a steel housing welded to the doors that protects the padlock against cutting or break-in attempts. This device is particularly recommended for containers used as outdoor storage, as it deters theft and makes forcing more difficult. In addition, the container has forklift pockets on the long sides, making it easier to handle with a forklift without using hooks or slings. These pockets comply with safety standards and allow stable, balanced lifting.

The standard color of this container is RAL 5010 (blue) or RAL 7035 (gray), but other shades may be available on request. The paint is applied at the factory and provides additional protection against corrosion. It is important to note that even a new container may show slight scratches or handling marks, without affecting its structure or watertightness.

How to check the condition of a new "One Trip" container when buying?

When buying a new "One Trip" container, it is advisable to check certain points. First, make sure the container has its CSC plate (Convention for Safe Containers), which certifies its compliance with international safety standards. This plate must be valid and up to date.

Next, inspect the door seals: they must be flexible, free of cracks or tears, and in full contact with the structure. Also check the condition of the floor: it must not show soft spots, delamination, or holes. The walls and roof must be free of perforations or significant deformation. Finally, check that the locks and door handles work properly.

A new container is generally delivered with a watertightness certificate and may be subjected to a light test to verify the absence of leaks. It is recommended to request these documents from the seller.

Uses of the new 20-foot container: versatility and adaptability

In terms of uses, this new 20-foot container is suitable for many applications. It can serve as secure storage for goods, tools, construction equipment, or personal belongings. Thanks to its watertightness and strength, it effectively protects against rain, dust, and rodents.

It is also widely used in events: stands, dressing rooms, ticket offices, or temporary storage spaces. Its bright color and new appearance make it an acceptable aesthetic element for public events.

In addition, this container is an excellent base for conversion into a site office, technical room, workshop, or even modular housing. Its rigid structure and standardized dimensions allow the integration of openings (doors, windows), insulation, electrical installation, and plumbing, subject to compliance with local construction and planning rules. Converting a container into living space is common, but it requires particular attention to thermal insulation and ventilation to avoid condensation.

Sector-specific use cases

In the construction sector, the new 20-foot container is often used as a site living base: changing rooms, canteens, site management offices, or storage for sensitive equipment. Its standard color and new appearance allow correct visual integration on urban sites.

In industry, it serves as a storage room for spare parts, consumables, or chemicals (with the necessary safety arrangements). In retail, it can be converted into a pop-up shop, drive-through, or pickup point. In agriculture, it is used to store crops, seeds, or equipment, provided ventilation and protection against rodents are included.

In the events sector, it serves as a control room, technical dressing room, bar, or restrooms (with fitting out). In logistics, it can serve as a temporary cross-docking platform. Finally, for individuals, it provides a garage, workshop, or storage space for vehicles, furniture, or archives.

Comparison with other container types

Compared to other container sizes and types, the new 20-foot container has advantages and disadvantages. Compared to the 40-foot, it is more maneuverable, lighter, and can be transported more easily, including on difficult-access terrain. Its internal volume of 33.2 m³ is sufficient for many uses, but it is half that of a 40-foot (about 67 m³). The 20-foot is also better suited to storing heavy, dense loads, because its lower tare weight allows more payload compared to a 40-foot. On the other hand, for housing or office use, the 40-foot offers more space and may be more economical per square meter.

Compared to the 10-foot, the 20-foot offers double the volume and better modularity, but it is bulkier and requires more ground space. The 10-foot is often used for small storage or kiosks, but it is less common and may be more expensive per cubic meter.

Compared to the 20-foot high cube, which has an internal height of about 2.69 m (30 cm more), the standard 20-foot is more limited in height, which can hinder the installation of partitions or suspended ceilings. The high cube is preferred for housing or offices, but it is slightly more expensive and can cause height-related transport issues (especially for passage under structures).

Compared to the open top container, which allows top loading, the standard 20-foot dry is more watertight and better suited to routine storage. The open top is reserved for out-of-gauge loads. Compared to the flat rack, which has no side walls, the 20-foot dry offers full protection. Finally, compared to the reefer container, which is insulated and equipped with a refrigeration unit, the 20-foot dry cannot control temperature, but it is much cheaper and simpler to maintain.

Transport and installation: what to anticipate

In France, transporting a shipping container is subject to road freight transport regulations. A 20-foot container can be transported on a container truck or a suitable trailer. The authorized gross combination weight (PTRA) and the vehicle's payload must be respected. For an exceptional convoy, a prefectural authorization may be required if dimensions or weight exceed regulatory limits. As a general rule, a 20-foot container falls within standard transport norms, but it is advisable to check with the carrier.

For ground installation, it is important to provide stable, level ground. A container can be placed on concrete blocks, wooden beams, or metal feet, to avoid direct contact with the ground and limit moisture. A gap of at least 50 cm between the container and the ground is recommended to allow air circulation and prevent corrosion from below. If the container is to remain in place permanently, it can be fixed to the ground with anchors, especially in wind-exposed areas.

Transport regulations in France

Transporting a 20-foot container is generally done by a container truck, whose total length must not exceed 16.50 m for a standard road combination. The authorized gross combination weight (PTRA) is 40 tonnes for an articulated combination, and the payload is about 25 to 28 tonnes depending on the vehicle. A new 20-foot container weighs about 2.3 tonnes empty, leaving a large margin for loading. However, if the container is transported with goods, care must be taken not to exceed axle weight limits.

For exceptional transports, prior authorization is required from the DREAL (Regional Directorate for the Environment, Planning, and Housing) if the convoy exceeds 16.50 m in length, 2.55 m in width, or 4.00 m in height, or if the total weight exceeds 40 tonnes. A standard 20-foot container respects width (2.438 m) and height (2.591 m) limits, but its length of 6.058 m may require specific securing. It is also important to comply with the rules for stowing and securing containers on vehicles, in accordance with Articles R.312-1 et seq. of the French Highway Code. The carrier must ensure that the container is locked onto the truck chassis using twist-locks, which are standardized devices. Finally, if the container is imported or exported, it must be declared to customs and may be subject to phytosanitary checks, especially if it contains untreated wood products.

Maintenance and durability: preserving your investment

Maintaining a Corten steel container is relatively simple. It is advisable to regularly wash the walls with clean water and mild soap to remove salt, dust, and pollution deposits, which can accelerate corrosion. Avoid overly powerful pressure washers that could damage seals or paint. Inspect door seals annually and replace them if necessary. Check for rust spots and treat them with a suitable anti-rust paint. Grease hinges and locking mechanisms to ensure proper operation. If the container is used to store moisture-sensitive products, it is recommended to install a dehumidifier or desiccant bags.

To go further into maintenance, a distinction should be made between preventive and corrective maintenance. Preventive maintenance consists of protecting the container before damage appears: applying a protective wax to painted walls, checking for water accumulation on the roof (which could create puddles and promote rust), and maintaining sufficient ventilation inside to prevent condensation. Corrective maintenance comes into play when damage is observed: removing surface rust with a wire brush or sandpaper, then applying an anti-rust primer and a topcoat. For small scratches, a paint touch-up pen may be enough. It is also recommended to periodically check the condition of welds and reinforcements, especially if the container has suffered impacts during handling. Forklift pockets, although robust, should be inspected for possible cracks. Finally, if the container is exposed to a marine environment (near the sea), more frequent rinsing with fresh water is necessary to remove salt, which accelerates corrosion.

Regulations and compliance

Regarding regulations, a new shipping container must comply with ISO 1496-1, which defines the design, construction, and testing specifications for series 1 containers. The CSC plate is mandatory for any container used in international transport. In France, using a container as a storage room or office may require a planning authorization if it is installed permanently. It is advisable to check with the town hall to find out local rules (prior declaration, building permit, etc.).

Conclusion

The new 20-foot "One Trip" shipping container is a versatile, robust, and attractive product, suitable for many uses. Its Corten steel, marine plywood floor, and safety equipment make it a durable choice for storage, events, or conversion. Before purchase, it is essential to check its condition, certificates, and plan transport and installation arrangements. With minimal maintenance, it can serve for many years.