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

Why choose a new 20-foot container instead of a used one?

The new 20-foot shipping container, often called "One Trip", has made only one sea voyage to deliver goods from its manufacturing site. It differs from used containers by its flawless aesthetic and structural condition: unblemished paint, no rust, clean floor, and door seals in perfect condition.

Choosing a new container offers several decisive advantages. First, the structure has undergone no deformation or repair: walls, roof, and floor are intact. Second, watertightness is optimal, effectively protecting moisture-sensitive goods. Finally, service life is extended: a new Corten steel container resists corrosion better than a used container already exposed to weather and sea spray. The lockbox and forklift pockets on this model respectively enhance theft protection and handling ease.

The used container, cheaper, may suit simple storage or non-visible use. However, it may show rust, dents, worn floor, and tired seals, potentially leading to refurbishment costs. The new container also retains better resale value. The price of a new 20-foot container is generally higher than a used one, but the gap can be offset by longevity and no refurbishment costs.

Technical specifications of the new 20-foot container

Dimensions and weight

The 20-foot dry container complies with ISO 668 and ISO 1496-1. Its standard external dimensions are approximately 6.058 m long, 2.438 m wide, and 2.591 m high. Inside, it offers about 5.898 m long, 2.352 m wide, and 2.393 m high, giving an internal volume of about 33 m³. Tare weight is between 2,200 and 2,400 kg, and maximum payload reaches about 28,000 kg.

Materials and construction

The structure is Corten steel, a low-alloy steel that resists atmospheric corrosion by forming a protective surface layer. The floor is 28 mm marine plywood, a material resistant to moisture and heavy loads. Side walls and roof are corrugated steel, ensuring good structural rigidity. Double rear doors are equipped with container locks (locking bars) and rubber seals. Four lifting rings at upper and lower corners, compliant with ISO corner castings, allow lifting by spreader or slings.

Specific equipment

This container comes with a lockbox that protects the padlock against cutting attempts, and forklift pockets for easy handling with a forklift. It is available in standard color RAL 5010 (Blue) or RAL 7035 (Grey).

Criteria for choosing a new 20-foot container

Check the actual condition

When buying a new container, it is essential to ensure it is truly "One Trip" and not a reconditioned used container. A new container has uniform paint, no rust, a floor without stains or wear, and flexible, uncracked door seals. The CSC plate (Convention for Safe Containers) must be present and attest to compliance with international safety standards. Also check for the lockbox and forklift pockets.

Check dimensions and weight

Ensure dimensions and weight match the stated specifications. The container must be delivered with functional doors, without deformation. A visual check of welds and corner castings is recommended.

Choose color and options

The standard color is blue RAL 5010 or grey RAL 7035. Other shades may be available on request, but they can lengthen lead times. The lockbox and forklift pockets are practical equipment that may not be included on some competing models.

Uses suited to the new 20-foot container

On-site storage

This container is ideal for visible storage on a commercial, industrial, or agricultural site, where aesthetics matter. Its strength and watertightness protect goods from moisture and rodents. The lockbox enhances theft security.

Transport of goods

Due to its ISO compliance, it can be used for transporting goods by sea, rail, or road, subject to applicable regulations. It is stackable and can be handled by standard equipment.

Events and conversion

Its sound structure and new paint make it an ideal base for insulation, cladding, bay openings, electrical installation, and plumbing. It is valued for stands, pop-up stores, ticket offices, temporary changing rooms, or as a base for conversion into a site office, technical room, workshop, or modular housing.

Sector-specific uses

In agriculture, it can store grain, animal feed, equipment, or inputs, provided moisture is prevented. In construction, it is commonly used as a site office, changing room, canteen, or storage for tools and materials. In retail and events, it becomes a pop-up shop, exhibition stand, ticket office, or catering space. In industry, it can hold spare parts, consumables, or archives. In logistics, it is used for transporting dry goods, palletized or bulk. Finally, in alternative housing, it serves as a base for modular constructions, container homes, lodges, or studios, after insulation and interior fitting.

Comparison with other container types

20-foot vs 40-foot container

The standard 40-foot container offers about 67 m³, double the volume, but is longer (12.192 m) and heavier (about 3,750 kg empty). It requires more powerful lifting equipment and larger maneuvering spaces. The 20-foot container remains the most common, facilitating resale and spare parts supply.

Dry vs open top, flat rack, reefer

The dry container does not allow top loading, but is more watertight and simpler to use. The open top container is designed for vertical loading of out-of-gauge cargo. The flat rack, without side walls, suits very wide or tall loads but offers no weather protection. The reefer container, with a cooling unit, is for perishable goods, but is heavier and more expensive. Finally, the 20-foot high cube is rare; the standard remains the 20-foot dry with 2.591 m external height.

Regulations and transport

Road transport

In France, road transport of containers is governed by the Highway Code and European Commission rules. A 20-foot container can be transported on a rigid truck or semi-trailer. The maximum authorized gross combination weight must not exceed 44 tonnes for a 5-axle combination, or 40 tonnes for a 4-axle combination, unless local exemptions apply. The driver must ensure the container is locked on the chassis with twist-locks. Transport of dangerous goods (ADR) imposes additional rules: signage, driver training, transport documents.

Sea and rail transport

For sea transport, the container must be stackable and comply with ISO 1496-1, with a valid CSC plate. The CSC plate must be renewed periodically (every 30 months for new containers, then according to maintenance procedures). For rail transport, it must comply with UIC standards.

Urban planning

For a fixed installation (office, housing), it may be necessary to apply for planning permission from the town hall, as a container can be considered a construction. It is also important to check local planning rules, especially in protected or coastal areas. Containers used as site offices may benefit from specific rules. It is advisable to contact the local planning department before any installation.

Care and maintenance

Preventive maintenance

Preventive maintenance involves regular inspection of the container, at least once a year, paying particular attention to sensitive points: welds, corner castings, hinges, locking bars, and door surrounds. Washing with clear water under moderate pressure removes dust, salt, and atmospheric pollutants. In industrial or marine environments, this cleaning can be quarterly. Applying protective wax to the paint is not essential but can slow tarnishing.

Corrective maintenance

Corrective maintenance is carried out as soon as an anomaly is detected: paint chip, deep scratch, early rust, detached seal, damaged floor. In this case, scrape the rusted area down to sound metal, apply a rust-inhibiting primer, then a topcoat in a similar shade. For floors, a damaged marine plywood panel can be replaced with a panel of the same thickness, screwed or nailed to the metal cross members. Door seals are easy to replace: they are generally clipped or glued into a groove. A worn seal lets water and air through, which can damage stored goods. Finally, locking mechanisms must be lubricated with water-resistant grease to prevent jamming.

Delivery and setup

A 20-foot container can be delivered by container truck with lifting arm (crane truck) or by flatbed truck with forklift unloading if the site has suitable equipment. With an empty weight of about 2.3 tonnes, a forklift with a minimum capacity of 3.5 tonnes is often required. The ground must be stable and level to prevent settling. It is advisable to allow sufficient maneuvering space and check access (width, height, load-bearing capacity). Once placed, the container can be shimmed at the corners with plates or blocks to distribute the load. For prolonged use, it is recommended to raise it slightly off the ground to avoid direct contact with moisture and to provide ventilation if storing sensitive materials. These simple precautions extend the container's life and preserve its contents.

Interior fitting: optimizing the space of a 20-foot container

With an internal volume of about 33 m³ and a floor area of about 13.8 m², a 20-foot container offers interesting storage or fitting space. To make the most of this volume, it is useful to structure the space into distinct zones. For storage, installing metal shelving along the full height allows stacking loads and freeing the center for movement. Euro pallets (80 x 120 cm) fit easily in two rows, with a central aisle. This allows storing up to 10 or 11 pallets on the floor, and more with raised racks.

For workshop or technical room use, lighting is key: without openings, the interior is completely dark. Installing low-consumption LED lighting, powered by a generator or mains connection, is essential. Natural ventilation can be provided by high and low ventilation grilles, creating airflow and limiting condensation. For office or reception use, thermal insulation is strongly recommended: it prevents overheating in summer (steel conducts heat) and cold in winter. Insulation with rigid panels or sprayed foam, completed with interior lining, considerably improves comfort.

Converting a container into living or working space often requires opening additional bays or doors. These cuts must be made carefully, as they affect structural rigidity. It is recommended to reinforce openings with welded metal frames and never cut main load-bearing elements (corner castings, bottom and top rails). A metal construction professional can determine the necessary reinforcements. Finally, moisture control is essential: a closed container can develop condensation from temperature changes. Adding a dehumidifier or desiccant bags, along with suitable ventilation, protects stored goods and interior fittings.

New container and sustainable development: a second life for steel

The shipping container is designed to last. Its manufacture uses a significant amount of steel, but its robustness allows it to serve for decades, often well beyond its maritime career. Buying a new container means investing in a product that can be reused, converted, resold, or recycled at end of life. Corten steel is fully recyclable, fitting into a circular economy logic.

Moreover, converting containers into modular spaces (offices, housing, shops) is often presented as a more frugal alternative to traditional construction, as it reuses an existing structure and limits construction waste. A new, unaltered container is particularly well suited to this type of project: it requires no heavy refurbishment before fitting, reducing material and labor consumption. For companies concerned about their environmental impact, choosing a durable new container rather than disposable equipment can therefore be of interest, provided the entire life cycle is considered.

Common mistakes to avoid when buying

Several pitfalls await the buyer of a new 20-foot container. The first mistake is relying solely on the "new" label without checking the actual condition: some sellers offer reconditioned containers as new. Therefore, examine the paint, seals, floor, and CSC plate. The second mistake is neglecting access and handling: a container over 2 tonnes cannot be moved by hand, and a sloped, narrow site without maneuvering space can complicate delivery. It is prudent to check gate widths, branch heights, and ground load-bearing capacity before ordering.

The third mistake is forgetting planning procedures when the container is intended to remain permanently. A prior declaration or building permit may be required depending on surface area and duration. The fourth mistake is underestimating maintenance: even new, a container exposed to sea spray or an industrial environment must be inspected and cleaned regularly. Finally, the fifth mistake is neglecting interior humidity: storing sensitive materials without ventilation or dehumidification can lead to mold and damage, even in a perfectly watertight container.

Conclusion

The new 20-foot "One Trip" shipping container is a durable and versatile solution. Its Corten steel construction gives it superior corrosion resistance to ordinary steel, extending its life even outdoors. Its new condition guarantees optimal watertightness and increased security for storing valuables. The integrated lockbox enhances theft protection. Forklift pockets facilitate on-site movement without heavy lifting equipment. Finally, its standard color allows aesthetic integration into various environments.

Before purchase, it is advisable to check the CSC plate, seal condition, and presence of mentioned equipment. For any questions about delivery, transport, or installation, consulting a professional is recommended.