ISO tank T grades refer to the types of tank containers designed for the transport of specific liquid products. There are several different T grades, with each grade being assigned a specific code: T1 – Tank containers for gases (pressurized tanks) T2 – Tank containers for liquids, non-dangerous goods (unpressurized tanks) T3 – Tank containers for liquids, dangerous goods (unpressurized tanks) T4 – Tank containers for powders and granular materials (unpressurized tanks) T5 – Tank containers for non-dangerous liquids with a heating arrangement T6 – Tank containers for liquids, dangerous goods with a heating arrangement T7 – Tank containers for gases, non-dangerous goods (pressurized tanks) T8 – Tank containers for gases, dangerous goods (pressurized tanks) T9 – Tank containers for liquids, cryogenic temperature (unpressurized tanks) T10 – Tank containers for non-dangerous liquids, insulated with a heating arrangement T11 – Tank containers for liquids, dangerous goods, insulated with a heating arrangement T12 – Tank containers for non-dangerous liquids, insulated without a heating arrangement T13 – Tank containers for powders and granular materials, insulated or heated T14 – Tank containers for liquids, dangerous goods, Type TC (tanks with a test pressure of at least 4 bar) T15 – Tank containers for liquids, dangerous goods, Type U (tanks with a test pressure of at least 1.5 bar) T16 – Tank containers for liquids, non-dangerous goods, Type TC (tanks with a test pressure of at least 4 bar) T17 – Tank containers for liquids, non-dangerous goods, Type U (tanks with a test pressure of at least 1.5 bar) T18 – Tank containers for liquids, refrigerated (unpressurized tanks) T19 – Tank containers for non-dangerous gases (pressurized tanks) T20 – Tank containers for non-dangerous liquids (unpressurized tanks) T21 – Tank containers are also known as IMO Type 1 tanks and are used for the transportation of hazardous and non-hazardous liquids. These tanks are designed for a maximum allowable working pressure (MAWP) of 4 bar and have a cylindrical shape with a capacity ranging from 17,500 liters to 26,000 liters. T22: A tank container for hazardous chemicals, such as acids, alkalis, and salts. T23: The T23 ISO tank is designed for the transportation of liquids that have a lower flashpoint and a lower boiling point than those that can be transported in T22 and T21 tanks. It has a capacity of up to 26,000 liters and is commonly used for the transportation of solvents, gasoline, and other flammable liquids. T24: This ISO tank is designed for the transportation of liquids that have a higher temperature than those that can be transported in T22 and T21 tanks. It has a capacity of up to 25,000 liters and is commonly used for the transportation of hot bitumen, asphalt, and other high-temperature liquids. T25: The T25 ISO tank is designed for the transportation of gases, including liquefied petroleum gas (LPG), butane, and propane. It has a capacity of up to 40,000 liters and is commonly used for the transportation of these gases in bulk. T26: This ISO tank is designed for the transportation of non-hazardous chemicals, including food-grade products. It has a capacity of up to 26,000 liters and is commonly used for the transportation of liquid fertilizers, molasses, and other non-hazardous liquids. T27: The T27 ISO tank is designed for the transportation of liquids that are corrosive, such as acids and alkalis. It has a capacity of up to 26,000 liters and is commonly used for the transportation of these types of liquids in bulk. T28: This ISO tank is designed for the transportation of liquids that have a lower density, such as wines and spirits. It has a capacity of up to 26,000 liters and is commonly used for the transportation of these types of liquids in bulk. T29: The T29 ISO tank is designed for the transportation of liquids that have a higher density than those that can be transported in T28 tanks. It has a capacity of up to 27,000 liters and is commonly used for the transportation of latex, vegetable oils, and other high-density liquids. T50: A gas tank container for liquefied gases, such as propane, butane, and propylene. T75: A gas tank container for cryogenic gases, such as nitrogen, oxygen, and argon. T89: Intermediate bulk container (IBC) for non-hazardous liquids and solids T96: Portable tank for liquids and gases T99: Cryogenic ISO tank for carbon dioxide and other gases