The 40ft shipping containers are manufactured steel shipping containers and built to a very high specification out of high tensile steel, making them extremely strong and very secure. These new and used ISO marine shipping containers are more commonly known as shipping containers. 40 foot shipping containers are available for sale, either to buy or to hire either for short term renting or long term rental from all of the agents on our site. You can also have shipping container conversions carried out. These 40 foot used once shipping containers can be converted into offices, construction site offices, equipment stores, general stores, kitchens, washrooms, changing rooms, recording studios, accomodation units - in fact, the possibilities are endless.