Chapter 73 covers articles of iron or steel, but excludes finished products of iron or steel (such as machinery, vehicles, etc.) and goods clearly belonging to other chapters. This chapter includes semi-finished products of iron or steel (such as bars, profiles), tubes, plates, and various steel structural parts, containers, sanitary ware, etc. The core is further processed products of iron or steel materials, but attention must be paid to the distinction from Chapter 84 (mechanical appliances) and Chapter 85 (electrical equipment). If goods have mechanical or electrical functions, they are usually classified in the latter two chapters. Heading 7322 covers non-electric central heating radiators of iron or steel and parts thereof, as well as air heaters and hot air distributors of iron or steel and parts thereof. The key is 'non-electric' and 'of iron or steel,' and used for heating or air heating. Includes radiators, radiator parts, air heaters, hot air distributors, etc. However, electric radiators are classified in 8516, and mechanical ventilation equipment is classified in 8414, etc. Code 732290 is a 6-digit subheading. The first 2 digits '73' represent Chapter 73, articles of iron or steel; digits 3-4 '22' represent heading 7322, i.e., non-electric central heating radiators of iron or steel and parts thereof, air heaters and parts thereof; digits 5-6 '90' is the subheading, meaning other, i.e., radiator parts other than 732211 (cast iron radiators and parts thereof) and 732219 (other radiators of iron or steel and parts thereof). Therefore, 732290 specifically refers to parts of non-electric central heating radiators or air heaters of iron or steel, and does not include cast iron or other radiators themselves. The goods are radiator parts, made of iron or steel, non-electric, used in central heating systems. According to classification rules, if parts are not specifically listed in Chapter 84 or 85 and are dedicated to radiators of heading 7322, they are classified in 732290. If they are parts of electric radiators, they should be classified in 8516; if they are general iron or steel articles, they may be classified in 7326. Therefore, parts dedicated to non-electric iron or steel radiators are classified under this code.

Product Name: Fill in the standard name of the product, such as 'radiator parts' or the specific part name, which must match the actual item. Material: Specify the type of iron or steel, such as 'cast iron,' 'stainless steel,' 'carbon steel,' etc., which affects subheading distinction. Use: State that it is dedicated to central heating radiators or air heaters, such as 'for central heating system radiators.' Brand: Fill in the brand name; if no brand, fill in 'no brand.' Model: Fill in the product model or specification for identification. Working Principle: Briefly state whether it is electric, such as 'non-electric, heating by hot water or steam.' Complete Machine to Which Parts Belong: Indicate whether it is a radiator part or an air heater part, such as 'for radiators.' Customs declaration example: Product Name: Radiator parts (fins) Material: Cast iron Use: Dedicated to cast iron radiators for central heating systems Brand: No brand Model: RS-100 Working Principle: Non-electric, hot water heating Complete Machine to Which Parts Belong: For radiators HS Code: 732290 Quantity: 1000 kg Remarks: This part is dedicated to radiators, non-electric, made of cast iron. However, according to classification rules, cast iron radiator parts should be classified in 732211; if made of other iron or steel, then in 732290. Incorrectly classifying electric radiator parts in 732290; they should actually be classified in 8516. Incorrectly classifying cast iron radiator parts in 732290; they should actually be classified in 732211. Incorrectly classifying general iron or steel articles (such as bolts) in 732290; they should actually be classified in 7326.

Core basis for classification: 1) Material is iron or steel; 2) Non-electric; 3) Dedicated to central heating radiators or air heaters; 4) It is a part, not a complete unit. If electric, classified in 8516; if cast iron radiator parts, classified in 732211; if other iron or steel radiator parts, classified in 732219; if air heater parts, also classified in 732290. However, note that if parts have independent functions, they may be classified in Chapter 84 or 85. 732211 Cast iron radiators and parts thereof: Material is cast iron, and it is a complete radiator or part. 732290 is for parts of other iron or steel (non-cast iron), not including complete units. 732219 Other radiators of iron or steel and parts thereof: Includes complete non-cast iron radiators and their parts, but 732290 refers only to parts and excludes cast iron. 851629 Electric radiators: Electric radiators and their parts are classified in 8516; 732290 is non-electric. 841990 Parts of heat exchange units: Heat exchange units are used for heat exchange between fluids and may be classified in 8419, while 7322 specifically refers to heating radiators. 732690 Other articles of iron or steel: General iron or steel articles, not dedicated, while 732290 is for dedicated parts. Is the material iron or steel? Is it non-electric? Is it dedicated to central heating radiators or air heaters? Is it a part rather than a complete unit? Is cast iron excluded?

What is the difference between 732290 and 732219? 732219 is other radiators of iron or steel and parts thereof, including complete units and parts, and the material is not cast iron; 732290 is other radiator parts, referring only to parts and excluding cast iron. If they are cast iron radiator parts, they should be classified in 732211. Which code should parts of electric radiators be classified under? Electric radiators and their parts should be classified in 8516, with the specific subheading determined by type, such as 851629. 732290 applies only to non-electric radiator parts. How to determine whether radiator parts are dedicated to central heating systems? Determine based on product design, use description, installation position, etc. If the part is only used for central heating radiators and cannot be used for other equipment, it is considered dedicated. If general-purpose, it may be classified in 7326. Are air heater parts also classified in 732290? Yes, heading 7322 includes non-electric air heaters of iron or steel and parts thereof, so air heater parts are also classified in 732290, but it must be ensured that they are non-electric and of iron or steel. If radiator parts are made of copper, where should they be classified? Copper radiator parts should be classified in Chapter 74, specifically 7419 or other relevant subheadings, not 732290. 732290 applies only to iron or steel. Among the declaration elements for 732290, which are most prone to error? The most error-prone are 'Material' and 'Working Principle.' The material must specify the type of iron or steel, and the working principle must indicate non-electric; otherwise, classification errors may result. How should radiator parts with an electric fan be classified? If they have an electric fan, they may constitute a complete air heater or a machine with independent function and should be classified in 8414 or 8516, etc., rather than 732290. Judgment should be based on specific functions. How to check the tax rate for 732290? Tax rates may change. It is recommended to check the latest tax rate through the General Administration of Customs website, China International Trade Single Window, or consult a customs broker. Tax rates may differ under different trade agreements.