Chapter 73 covers articles of iron or steel, including various products made directly from iron or steel, but excluding raw materials for iron and steel smelting (such as pig iron and ferroalloys) and certain specific items (such as machinery and vehicles). This chapter ranges from simple semi-finished steel products (such as bars and profiles) to complex finished steel products (such as pipe fittings, containers, and fasteners), and is a core chapter for the classification of iron and steel commodities in international trade. Heading 7325 covers other cast articles of iron or steel, i.e., articles formed by the casting process without further processing (excluding deburring, cleaning, etc.). This heading includes castings of various shapes and uses, such as machine parts, pipe fittings, grinding media, etc., but excludes finished products that have undergone machining or specific items belonging to other headings. The first 2 digits "73" represent Chapter 73 (articles of iron or steel), indicating that the material of the goods is iron or steel. The 3rd-4th digits "25" represent heading 7325 (other cast articles of iron or steel), limited to iron or steel articles produced by the casting process. The 5th-6th digits "91" represent subheading 732591, specifically referring to castings for grinding, i.e., cast iron or steel articles used for grinding, crushing, and similar purposes, such as grinding balls and grinding segments in grinding mills. This commodity is a casting for grinding, made of iron or steel, formed by the casting process, and specifically used for grinding purposes, fully conforming to the description of 732591. Compared with adjacent codes, such as 732510 (castings for non-grinding purposes) or 732599 (other castings), this code is more specific and therefore takes priority for classification.
Chapter
Chapter 73 covers articles of iron or steel, including various products made directly from iron or steel, but excluding raw materials for iron and steel smelting (such as pig iron and ferroalloys) and certain specific items (such as machinery and vehicles). This chapter ranges from simple semi-finished steel products (such as bars and profiles) to complex finished steel products (such as pipe fittings, containers, and fasteners), and is a core chapter for the classification of iron and steel commodities in international trade.
Heading
Heading 7325 covers other cast articles of iron or steel, i.e., articles formed by the casting process without further processing (excluding deburring, cleaning, etc.). This heading includes castings of various shapes and uses, such as machine parts, pipe fittings, grinding media, etc., but excludes finished products that have undergone machining or specific items belonging to other headings.
Digit Breakdown
The first 2 digits "73" represent Chapter 73 (articles of iron or steel), indicating that the material of the goods is iron or steel. The 3rd-4th digits "25" represent heading 7325 (other cast articles of iron or steel), limited to iron or steel articles produced by the casting process. The 5th-6th digits "91" represent subheading 732591, specifically referring to castings for grinding, i.e., cast iron or steel articles used for grinding, crushing, and similar purposes, such as grinding balls and grinding segments in grinding mills.
Classification Basis
This commodity is a casting for grinding, made of iron or steel, formed by the casting process, and specifically used for grinding purposes, fully conforming to the description of 732591. Compared with adjacent codes, such as 732510 (castings for non-grinding purposes) or 732599 (other castings), this code is more specific and therefore takes priority for classification.
📝 Declaration Elements
Product Name: The Chinese and English names of the declared commodity, which should accurately reflect the true attributes of the goods, such as "castings for grinding" or specific names such as "grinding steel balls." Material: The specific iron or steel material of the declared casting, such as "cast iron" or "cast steel," and indicate the grade or composition, such as "high-chromium cast iron." Use: Clearly declare that the commodity is used for grinding, such as "used for grinding ore in ball mills," "used for grinding cement," and other specific uses. Processing Method: Declare as "casting," and may indicate whether further processing has been carried out (such as polishing or heat treatment), but the basic characteristics of casting must not be changed. Specifications and Dimensions: Provide dimensional information of the casting, such as diameter, length, weight, etc., which is particularly important for grinding media, such as "diameter 60mm." Brand: Declare the brand of the commodity (if any); if there is no brand, fill in "no brand." Model: Declare the model of the commodity (if any); if there is no model, fill in "no model." Product Name: Castings for grinding (high-chromium cast iron grinding balls); Material: High-chromium cast iron, chromium content 26%; Use: Used for grinding iron ore in ball mills; Processing Method: Casting; Specifications and Dimensions: Diameter 60mm; Brand: No brand; Model: No model. Misclassifying grinding castings under 732510 (castings for non-grinding purposes), resulting in tax rate differences. Material declaration not specific, failing to provide grade or composition, affecting classification. Use description does not emphasize "grinding," possibly leading to classification under other casting subheadings.
Product Name
The Chinese and English names of the declared commodity, which should accurately reflect the true attributes of the goods, such as "castings for grinding" or specific names such as "grinding steel balls."
⚠️ Writing only "castings" or "iron or steel articles," which is too general and does not reflect the "for grinding" characteristic.
Material
The specific iron or steel material of the declared casting, such as "cast iron" or "cast steel," and indicate the grade or composition, such as "high-chromium cast iron."
⚠️ Writing only "iron" or "steel," failing to distinguish cast iron from cast steel, or failing to provide the grade.
Use
Clearly declare that the commodity is used for grinding, such as "used for grinding ore in ball mills," "used for grinding cement," and other specific uses.
⚠️ Vague use description, such as "industrial use," without specifying the grinding use.
Processing Method
Declare as "casting," and may indicate whether further processing has been carried out (such as polishing or heat treatment), but the basic characteristics of casting must not be changed.
⚠️ Misreporting as "forging" or "machining," leading to classification errors.
Specifications and Dimensions
Provide dimensional information of the casting, such as diameter, length, weight, etc., which is particularly important for grinding media, such as "diameter 60mm."
⚠️ Failing to provide specific dimensions, writing only "various specifications."
Brand
Declare the brand of the commodity (if any); if there is no brand, fill in "no brand."
⚠️ Confusing the brand with the manufacturer, or failing to declare truthfully.
Model
Declare the model of the commodity (if any); if there is no model, fill in "no model."
⚠️ Confusing the model with specifications, or failing to fill it in.
Example： Product Name: Castings for grinding (high-chromium cast iron grinding balls); Material: High-chromium cast iron, chromium content 26%; Use: Used for grinding iron ore in ball mills; Processing Method: Casting; Specifications and Dimensions: Diameter 60mm; Brand: No brand; Model: No model.
Common Mistakes：
Misclassifying grinding castings under 732510 (castings for non-grinding purposes), resulting in tax rate differences.
Material declaration not specific, failing to provide grade or composition, affecting classification.
Use description does not emphasize "grinding," possibly leading to classification under other casting subheadings.
🎯 Classification Logic
The core basis for classification is: 1) the material is iron or steel; 2) formed by the casting process; 3) specifically used for grinding purposes. At the same time, it must not have undergone further processing listed under other headings (such as machining or assembly). If the casting has undergone deep processing to become a machine part, it may be classified under Chapter 84. 732510 Castings for non-grinding purposes: 732510 covers other iron or steel castings for non-grinding purposes, such as machine bases and pipe fittings, while 732591 specifically refers to castings for grinding, with use being the core difference. 732599 Other castings: 732599 covers other iron or steel castings not elsewhere specified or included. If grinding castings were not specifically named, they would be classified here, but 732591 specifically names them, so it takes priority. 8207 Hand tools or tools for machine tools: 8207 includes grinding tools such as grinding wheels, but the material is not iron or steel castings, or they have been processed, whereas 732591 covers cast iron or steel articles. 8481 Machine parts: If grinding castings serve as dedicated machine parts and have been processed, they may be classified under 8481, but 732591 refers only to the castings themselves, without further processing. Is the material iron or steel? Is it formed by the casting process? Is it specifically used for grinding? Has it undergone further processing? Does it belong to commodities named under other headings?
Basis
The core basis for classification is: 1) the material is iron or steel; 2) formed by the casting process; 3) specifically used for grinding purposes. At the same time, it must not have undergone further processing listed under other headings (such as machining or assembly). If the casting has undergone deep processing to become a machine part, it may be classified under Chapter 84.
Confused Codes：
732510 - Castings for non-grinding purposes
732510 covers other iron or steel castings for non-grinding purposes, such as machine bases and pipe fittings, while 732591 specifically refers to castings for grinding, with use being the core difference.
732599 - Other castings
732599 covers other iron or steel castings not elsewhere specified or included. If grinding castings were not specifically named, they would be classified here, but 732591 specifically names them, so it takes priority.
8207 - Hand tools or tools for machine tools
8207 includes grinding tools such as grinding wheels, but the material is not iron or steel castings, or they have been processed, whereas 732591 covers cast iron or steel articles.
8481 - Machine parts
If grinding castings serve as dedicated machine parts and have been processed, they may be classified under 8481, but 732591 refers only to the castings themselves, without further processing.
Self-Check：
✓ Is the material iron or steel?
✓ Is it formed by the casting process?
✓ Is it specifically used for grinding?
✓ Has it undergone further processing?
✓ Does it belong to commodities named under other headings?
❓ FAQ
How do I check the tariff rate for HS code 732591? You can check through the official website of the General Administration of Customs of China or the International Trade Single Window. Enter code 732591 to view import tariffs, value-added tax, and other rates. Note that rates may change due to country or trade agreement changes, and the latest published rates should prevail. What is the difference between castings for grinding and grinding steel balls? Castings for grinding is the commodity name under HS code 732591, including grinding steel balls, grinding segments, etc. Grinding steel balls are a specific variety, and if they are made of cast iron or steel and used for grinding, they are classified under 732591. How do I distinguish casting from forging when declaring? Casting is the process of pouring molten metal into a mold to form a shape, while forging is shaping solid metal by hammering or pressure. Castings for grinding are usually cast and have characteristics such as surface blowholes. The processing method should be truthfully provided when declaring. If a grinding casting has undergone machining, can it still be classified under 732591? If machining (such as turning or milling) has gone beyond the basic characteristics of casting, it may be classified under Chapter 84 as machine parts. 732591 applies only to castings that have not undergone further processing. How do I choose between 732591 and 732510 for classification? 732591 is specifically for castings used for grinding, while 732510 is for castings for non-grinding purposes. Classification should be determined based on actual use. If used for grinding, choose 732591; otherwise, choose 732510. What documents are required for importing castings for grinding? Usually, a contract, invoice, packing list, bill of lading, certificate of origin, etc. are required. If anti-dumping is involved, relevant certificates are also required. It is recommended to consult a customs broker or customs authorities. What are common errors in the declaration elements for castings for grinding? Common errors include: material declaration not specific (such as writing only "iron"), use not clearly stating "grinding," processing method misreported as "forging," missing specifications and dimensions, etc. Declaration should be detailed and accurate. How do I determine whether a casting for grinding belongs to 732591? Key points: 1) the material is iron or steel; 2) formed by the casting process; 3) specifically used for grinding. If these are met, it is classified under 732591. Otherwise, consider other codes.
Q: How do I check the tariff rate for HS code 732591?
A: You can check through the official website of the General Administration of Customs of China or the International Trade Single Window. Enter code 732591 to view import tariffs, value-added tax, and other rates. Note that rates may change due to country or trade agreement changes, and the latest published rates should prevail.
Q: What is the difference between castings for grinding and grinding steel balls?
A: Castings for grinding is the commodity name under HS code 732591, including grinding steel balls, grinding segments, etc. Grinding steel balls are a specific variety, and if they are made of cast iron or steel and used for grinding, they are classified under 732591.
Q: How do I distinguish casting from forging when declaring?
A: Casting is the process of pouring molten metal into a mold to form a shape, while forging is shaping solid metal by hammering or pressure. Castings for grinding are usually cast and have characteristics such as surface blowholes. The processing method should be truthfully provided when declaring.
Q: If a grinding casting has undergone machining, can it still be classified under 732591?
A: If machining (such as turning or milling) has gone beyond the basic characteristics of casting, it may be classified under Chapter 84 as machine parts. 732591 applies only to castings that have not undergone further processing.
Q: How do I choose between 732591 and 732510 for classification?
A: 732591 is specifically for castings used for grinding, while 732510 is for castings for non-grinding purposes. Classification should be determined based on actual use. If used for grinding, choose 732591; otherwise, choose 732510.
Q: What documents are required for importing castings for grinding?
A: Usually, a contract, invoice, packing list, bill of lading, certificate of origin, etc. are required. If anti-dumping is involved, relevant certificates are also required. It is recommended to consult a customs broker or customs authorities.
Q: What are common errors in the declaration elements for castings for grinding?
A: Common errors include: material declaration not specific (such as writing only "iron"), use not clearly stating "grinding," processing method misreported as "forging," missing specifications and dimensions, etc. Declaration should be detailed and accurate.
Q: How do I determine whether a casting for grinding belongs to 732591?
A: Key points: 1) the material is iron or steel; 2) formed by the casting process; 3) specifically used for grinding. If these are met, it is classified under 732591. Otherwise, consider other codes.
⚠️ Disclaimer: HS code classification, declaration elements, tariff rates and regulatory conditions on this page are for reference only and do not constitute legal advice on customs classification. Tariff rates and regulations are subject to change; the latest announcements from the General Administration of Customs and on-site determinations shall prevail. Please consult professional customs brokers or customs authorities before import/export.