Chapter 73 covers articles of iron or steel, but excludes raw materials for iron and steel smelting, mineral products, and certain specific goods (such as machinery and vehicles). This chapter includes semi-finished and finished products such as tubes, profiles, and plates, including structural components, containers, and household utensils. The core characteristic is that they are made of iron or steel and are not more specifically listed in other chapters. Heading 7310 covers containers of iron or steel, used for the transport or packing of goods, usually of a capacity not exceeding 300 liters, including drums, cans, tins, boxes, etc. These containers are generally reusable or single-use, but exclude tools clearly falling under Chapter 82 or furniture under Chapter 94. First 2 digits 73 = chapter on articles of iron or steel; digits 3-4, 10 = containers of iron or steel, for the transport or packing of goods, capacity ≤300 liters; digits 5-6, 21 = specific subheading referring to steel drums, usually cylindrical drums of larger capacity (e.g., 200 liters), distinguished from other containers such as cans and tins. The goods are steel drums, usually of a capacity ≤300 liters, used for transport and packing, meeting the description of heading 7310. Adjacent codes such as 7311 (containers for compressed gas) are excluded due to different use; 7326 (other articles of iron or steel) is excluded because containers are not specifically listed there.

Product name: The specific name of the declared goods, such as "steel drum" or "steel barrel", which must be consistent with the actual goods. Material: Clearly specify the type of iron or steel, such as "carbon steel" or "stainless steel", which affects subheading subdivision. Capacity: The volume of a single drum, in liters, must be ≤300 liters. Use: What kind of goods are contained, such as "chemicals" or "food", which affects regulatory conditions. Brand: Manufacturer or brand name; if there is no brand, fill in "none". Specifications and model: Such as diameter × height, or model code, for easy identification. Whether reusable: State whether the drum is designed to be reusable, which affects classification. Product name: steel drum; Material: carbon steel; Capacity: 200 liters; Use: containing chemical raw materials; Brand: ABC; Specifications and model: diameter 600mm × height 900mm; Whether reusable: yes. If capacity exceeds 300 liters, it should be classified under other subheadings of 7310 or 7309. Stainless steel drums may need to be classified under other subheadings of 7310. If the drum is equipped with mechanical or electrical devices, it may be classified under Chapter 84 or Chapter 85.

The core basis for classification is: 1) the material is iron or steel; 2) the container is used for the transport or packing of goods; 3) the capacity does not exceed 300 liters; 4) it is not dedicated for use with a specific machine or vehicle. Steel drums are usually cylindrical, commonly with a capacity of 200 liters, meeting the description of 7310.21. 731010 Iron or steel cans: Cans usually have a smaller capacity (<50 liters) and various shapes, while drums have a larger capacity and are cylindrical. 731029 Other containers of iron or steel: This subheading covers other containers such as boxes and tins, but drums have a dedicated subheading 731021. 730900 Other containers of iron or steel: Containers with a capacity exceeding 300 liters are classified under this heading, while steel drums are ≤300 liters. 732690 Other articles of iron or steel: If the container is not specifically listed or is not for transport or packing, it may be classified under this code. Confirm whether the capacity is ≤300 liters Confirm that the material is iron or steel Confirm that the use is for transport or packing Confirm that it is not dedicated for use with machines or vehicles Confirm that it is not a container for compressed gas

How are steel drums and steel cans distinguished in HS codes? The main difference lies in capacity and shape. Steel drums usually have a larger capacity (e.g., 200 liters) and are cylindrical, classified under 731021; steel cans have a smaller capacity (<50 liters) and various shapes, classified under 731010. If a steel drum has a capacity exceeding 300 liters, which code should it be classified under? Steel containers with a capacity exceeding 300 liters should be classified under heading 7309, with specific subheadings further divided according to material and use. Are stainless steel drums also classified under 731021? The subheading 731021 is described as "steel drums" without distinguishing carbon steel or stainless steel, so stainless steel drums are also classified under this subheading, but note that some countries may subdivide further. Why is capacity required in the declaration elements for steel drums? Capacity is a key indicator for distinguishing different subheadings under 7310; a capacity ≤300 liters is classified under 7310, while exceeding that is classified under 7309. Are there special requirements for declaring steel drums used to contain dangerous goods? Relevant information about the dangerous goods, such as the UN number, must be provided, and dangerous goods packaging certification may be required, but the HS code remains unchanged. How can I check the import tariff rate for steel drums? You can consult the customs tariff of the importing country, based on HS code 731021; the rate varies by country and may be affected by free trade agreements. Is the HS code for steel drums consistent when exporting and importing? In principle, it is consistent, but individual countries may make adjustments; it is recommended to follow the customs regulations of the destination country.