Tank containers are used for transportation of different types of materials from one place to another safely. One has the option to choose from different tank containers for sale which can meet their demands based on the type of material they have to transport. Tank containers are generally designed and built for an operating pressure of 3 bar. But usually these are tested to withstand 4.5 bar keeping in mind the defects present in the material. Because the materials used in the manufacturing of tank containers, as a matter of fact most of the materials have internal defects. These internal defects include dislocations, inclusions, cracks etc., which will deteriorate the mechanical properties of material used in the manufacturing of tank container. In presence of these internal defects, material’s strength will be lowered, hence leads to accidents. When carrying hazardous materials the accident will be catastrophic.
Hence before selecting a type of container for transportation of cargo, proper study and research has to be carried out that the cargo does not react with the material used in the manufacturing of the container. In some cases, container is inside lined with a material which is inert to the cargo. This is most widely used while transporting food grade material. In this case even slightest contamination of the food by reacting with the container may lead to food poisoning. On consumption of such type of contaminated food leads to severe health disorders. Tank containers of food grades are usually used for carrying cargos like fruit juices, spirits, and sweet oils. They are also used to carry hazardous materials like fuels, toxic substances, corrosion protection agents etc.
Tanks are generally classified according to the specification of the tank shell and also fittings. This classification determines the type of product that can be carried in the tank container. Tank containers are reliable and safe, mainly a cost-effective transport medium for transporting bulk liquids around the world. The tank containers are tested and approved for safe and efficient transportation of a wide range of cargos. These containers are also exposed to marine environment for a long period of time when water ways are chosen as mode of transportation. Hence selection of material which has higher resistance to corrosion in marine environment is mandatory. Otherwise the corrosion product may contaminate the food grade material that is being transported. Also it may leads to stress corrosion cracking when the cargo is a pressurized liquid. Sometimes it may lead to explosion when flammable liquid is being transported. Hence proper selection of type of material for the container is necessary. Also shape of the container is important, as it should accommodate the maximum amount of the cargo. Cubic containers has shown better accommodation of cargo among others