40ft flatbed trailer is a kind of trailer whose design is suitably made to carry bulk cargo and containers between shipping facilities and terminals. By simple definition, this is a long flat platform of either 20ft, 40ft, 48ft or 53ft length. 

Flatbed for sale is usually used to transport 20ft or 40ft containers, they are mainly used for container transportation supporting ships, ports, shipping lanes, highways, transit stations, bridges, tunnels, and multimodal transport.