Chapter 73 covers articles of iron or steel, including semi-finished products such as plates, rods, tubes, etc., and various finished articles of iron or steel, but excludes machines, mechanical appliances, vehicles, ships, etc., made of iron or steel, which are classified in other chapters. This chapter has a wide scope, ranging from steel structures to daily steel products, and is a common category of goods in international trade. Heading 7321 covers non-electric domestic stoves, ranges, heaters and similar appliances, of iron or steel, including liquid heaters, gas heaters, etc. These appliances are usually used in households or similar places, generating heat by burning fuel rather than by electric heating. The first 2 digits 73 represent Chapter 73, articles of iron or steel; digits 3-4, 21, represent heading 7321, i.e., non-electric domestic stoves, ranges, heaters and similar appliances, of iron or steel; digits 5-6, 82, represent subheading 732182, specifically liquid heaters, i.e., non-electric appliances of iron or steel specially used for heating liquids (such as water, oil, etc.). The goods are liquid heaters, which are non-electric domestic heating appliances of iron or steel, conforming to the description of heading 7321, and subheading 732182 explicitly covers liquid heaters, so they are classified under this code, rather than electric heating appliances (classified under 8516) or other articles of iron or steel.

Product Name: The specific name of the declared goods, such as 'non-electric liquid heater' or 'oil-fired liquid heater'. Use: Explain the usage scenario of the heater, such as 'household', 'industrial', or 'marine'. Material: Main material, such as 'of iron or steel', and specify the specific type of steel (e.g., stainless steel). Heating Method: Explain the type of heat source, such as 'oil-fired', 'gas-fired', or 'solid fuel'. Brand: Manufacturer or brand name; if no brand, fill in 'none'. Model: Product model or specification, such as 'LH-100'. Working Principle: Briefly describe the heating principle, such as 'heating the liquid in the coil by burning oil'. Product Name: Non-electric oil-fired liquid heater; Use: Household heating system; Material: Of iron or steel; Heating Method: Oil-fired; Brand: ABC; Model: LH-100; Working Principle: Heating water in the coil by burning oil, used for household heating. Misclassifying non-electric liquid heaters as electric heating appliances (8516), leading to incorrect tax rates and regulatory conditions. Material declaration unclear, not specifying of iron or steel, may be classified as articles of other materials. Use declared as industrial but actually household, affecting classification and regulatory document requirements.

Core basis for classification: 1. Whether the goods are non-electric; 2. Whether they are made of iron or steel; 3. Whether they are used for heating liquids; 4. Whether they are for household or similar use. If the above conditions are met, classify under 732182. If electric, classify under 8516; if made of other materials, classify under other chapters. 851610 Electric water heaters: Electric water heaters use electricity for heating and are classified under 8516; while 732182 is non-electric, using fuel for heating. 732181 Non-electric gas heaters: 732181 is gas fuel heaters, 732182 is liquid heaters, different heat sources. 732189 Other non-electric heaters: 732189 covers other non-electric heaters, such as solid fuel heaters, while 732182 specifically refers to liquid heaters. 841911 Non-electric instantaneous water heaters: 841911 is instantaneous gas water heaters, belonging to mechanical appliances, while 732182 is domestic heaters, non-mechanical structure. Is it non-electric? Is it of iron or steel? Is it used for heating liquids? Is it for household or similar use? Is it heated by burning fuel?

How to determine whether a liquid heater should be classified under 732182? First confirm whether the heater is non-electric, i.e., heated by burning fuel (such as oil, gas); second confirm the material is of iron or steel; finally confirm the use is household or similar. If all are yes, classify under 732182. If electric, classify under 8516. What is the main difference between 732182 and 851610? 732182 is non-electric liquid heaters, using fuel for heating; 851610 is electric water heaters, using electricity for heating. Different heat sources, different classifications. How to describe the material of a liquid heater when declaring? It should be clearly declared as 'of iron or steel', and specify the specific type, such as 'stainless steel'. Avoid vague expressions like 'metal' to avoid classification disputes. What are the common types of liquid heaters? Common types include oil-fired water heaters, gas liquid heaters, marine liquid heaters, etc., all heated by burning fuel, belonging to non-electric appliances of iron or steel. If a liquid heater is used for industrial purposes, is it still classified under 732182? 732182 mainly targets heaters for household or similar use. If it is an industrial large heater, it may be classified under other headings, such as 8419. Judgment should be based on specific use and structure. What regulatory documents are required for importing liquid heaters? Regulatory documents depend on specific use and characteristics, may involve CCC certification, energy efficiency labeling, etc. It is recommended to check the latest Customs Import and Export Tariff and regulatory conditions. How to query the tariff rate for 732182? It can be queried through the General Administration of Customs website or the Import and Export Tariff. The rate will change according to national trade policies, and the latest published version should prevail. What details are easily overlooked when classifying liquid heaters? Details such as heating method (electric vs. non-electric), material (whether of iron or steel), use (household vs. industrial) are easily overlooked, and these directly affect classification.