A shipping container is a container with strength suitable to withstand shipment, storage, and handling. Shipping containers range from large reusable steel boxes used for intermodal shipments to the ubiquitous corrugated boxes. In the context of international shipping trade, "container" or "shipping container" is virtually synonymous with "(standard) intermodal freight container" (a container designed to be moved from one mode of transport to another without unloading and reloading).
Freight containers are a reusable transport and storage unit for moving products and raw materials between locations or countries. There are about seventeen million intermodal containers in the world, and a large proportion of the world's long-distance freight generated by international trade is transported in shipping containers. In addition, it is estimated that several million of these containers have now been discarded due to the shipping cost of sending them back to their port of origin. Their invention made a major contribution to the globalization of commerce in the second half of the 20th century, dramatically reducing the cost of transporting goods and hence of long-distance trade.
Corrugated boxes are commonly used as shipping containers (more than 90% of all shipping containers are of this type). They are made of corrugated fiberboard which is lightweight, recyclable, and strong enough to ship a variety of products.
Wooden boxes are often used for shipping heavy and dense products. They are sometimes specified for shipments of government or military shipments.
A crate is a large container, often made of wood, used to transport large, heavy or awkward items. A crate has a self-supporting structure, with or without sheathing.
An Intermediate bulk container (IBC) is a container used for transport and storage of fluids and bulk materials. The construction may be plastic, composite, steel, stainless steel, etc. Some are foldable (collapsible).
A Flexible Intermediate Bulk Container, FIBC, big bag, bulk bag, or super sack is a standardized container in large dimensions for storing and transporting and storing granular products. It is often made of a woven synthetic material.
A bulk box, bulk bin, skid box, or tote box is a pallet size box used for storage and shipping of bulk quantities.
Drums are cylindrical shipping containers made of steel, plastic or fiber. They are often used for liquids and granular materials.
Insulated shipping containers are a type of packaging used to ship temperature sensitive products such as foods, pharmaceuticals, and chemicals. They are used as part of a cold chain to help maintain product freshness and efficacy.
Some pails are used as shipping containers.
A Unit Load Device, or ULD, is a container used to transport cargo on commercial aircraft.
A ULD can be a pallet or container used to load luggage, freight, and mail on wide-body aircraft and specific narrow-body aircraft. It allows a large quantity of cargo to be bundled into a single unit. Since this leads to fewer units to load, it saves ground crews time and effort and helps prevent delayed flights. Each ULD has its own packing list, manifest, or tracking identification to improve control and tracking of contents
Custom containers are used for shipments of products such as weapons and aviation components. Customized cushioning, blocking and bracing, carrying handles, lift rings, locks, etc. are common to facilitate handling and to protect the contents. Often, these shipping containers are reusable.
Specialized shipping containers include: high cube containers (providing an extra 1 ft (305 mm) in height to standard shipping containers), pallet wides, open tops, side loaders, double door or tunnel-tainers, and temperature controlled containers.
Another specialized container, known as Transtainer, is a portable fuel and oil freight container. The hybrid bulk fuel tank is originally intended for the construction, mining, logging and farming sectors. The tank can be used to transport and store bulk fuels as well as dangerous liquids, by road, rail and sea.
Flight cases and transit cases are usually custom designed for shipping and carrying fragile equipment: audio visual, camera, instruments, etc. Although generally light in construction, they tend to have reinforced edges and corners.
Road cases are often used for shipping musical instruments and theater props.
The ubiquity and relative cheapness of used intermodal shipping containers meant that architects began to consider them as an alternative to traditional building materials. Used shipping containers were converted for use in housing, and as retail and office spaces. Examples of its use include the Cité A Docks student housing project in Le Havre, France; the Wenckehof container village in Amsterdam; the portable Puma City store in US cities; the food and retail Boxpark in London; the Dordoy Bazaar in Bishkek, Kyrgyzstan; and the temporary mall Re:START in Christchurch, New Zealand built after the 2011 Christchurch earthquake.
It has however been pointed out there are problems with recycling shipping containers, that it may not be as ecological friendly or cheap an option as it might appear. The containers may be coated with harmful chemicals such as chromate, phosphorus, and lead-based paints, while its wooden floors may be treated with toxic insecticides, and some cost and effort are involved in modifying containers to make them habitable. Others have noted various issues such as space constraint, insulation, and structural weakness if too much steel is cut out of the containers.