Chapter 73 covers articles of iron or steel, including various goods made directly from iron or steel, but excluding iron and steel smelting raw materials (Chapter 72), mechanical and electrical products (Chapters 84-85), and vehicles (Chapter 87). This chapter ranges from simple iron or steel structural parts and pipe fittings to complex castings, forgings, tools, and daily-use articles. The core lies in finished products formed by further processing (such as casting, forging, welding, machining) with iron or steel materials as the main body, rather than the basic materials themselves. Heading 7307 specifically covers pipe fittings of iron or steel, including castings, forgings, and other forms of connecting pieces, used for connection, branching, or sealing of piping, boilers, vessels, and other systems. Specifically includes flanges, elbows, tees, reducers, caps, threaded joints, etc. However, note that this heading only includes pipe fittings of iron or steel, excluding pipe fittings of plastics, copper, and other materials, and also excluding valves, cocks, and other fluid control devices (classified under 8481). First 2 digits 73: indicates Chapter 73, i.e., articles of iron or steel. Digits 3-4 07: indicates heading 7307, i.e., pipe fittings of iron or steel. Digits 5-6 11: indicates subheading 730711, i.e., castings of stainless steel. Among them, the 5th digit 1 indicates stainless steel, and the 6th digit 1 indicates castings. Therefore, 730711 specifically refers to cast pipe fittings of stainless steel material, such as stainless steel cast flanges, cast elbows, etc. Note that this subheading only includes pipe fittings formed by casting, excluding pipe fittings formed by forging or machining (the latter are classified under 730721, etc.). This commodity is a stainless steel casting and is used for pipe connection (pipe fitting), therefore classified under 730711. If it were a forged pipe fitting of stainless steel, it would be classified under 730721; if it were a cast pipe fitting of other iron or steel, it would be classified under 730719; if it were a casting of stainless steel for other non-pipe-fitting uses, it might be classified under 7325, etc. The key differences lie in material (stainless steel), manufacturing process (casting), and use (pipe fitting).
Chapter
Chapter 73 covers articles of iron or steel, including various goods made directly from iron or steel, but excluding iron and steel smelting raw materials (Chapter 72), mechanical and electrical products (Chapters 84-85), and vehicles (Chapter 87). This chapter ranges from simple iron or steel structural parts and pipe fittings to complex castings, forgings, tools, and daily-use articles. The core lies in finished products formed by further processing (such as casting, forging, welding, machining) with iron or steel materials as the main body, rather than the basic materials themselves.
Heading
Heading 7307 specifically covers pipe fittings of iron or steel, including castings, forgings, and other forms of connecting pieces, used for connection, branching, or sealing of piping, boilers, vessels, and other systems. Specifically includes flanges, elbows, tees, reducers, caps, threaded joints, etc. However, note that this heading only includes pipe fittings of iron or steel, excluding pipe fittings of plastics, copper, and other materials, and also excluding valves, cocks, and other fluid control devices (classified under 8481).
Digit Breakdown
First 2 digits 73: indicates Chapter 73, i.e., articles of iron or steel. Digits 3-4 07: indicates heading 7307, i.e., pipe fittings of iron or steel. Digits 5-6 11: indicates subheading 730711, i.e., castings of stainless steel. Among them, the 5th digit 1 indicates stainless steel, and the 6th digit 1 indicates castings. Therefore, 730711 specifically refers to cast pipe fittings of stainless steel material, such as stainless steel cast flanges, cast elbows, etc. Note that this subheading only includes pipe fittings formed by casting, excluding pipe fittings formed by forging or machining (the latter are classified under 730721, etc.).
Classification Basis
This commodity is a stainless steel casting and is used for pipe connection (pipe fitting), therefore classified under 730711. If it were a forged pipe fitting of stainless steel, it would be classified under 730721; if it were a cast pipe fitting of other iron or steel, it would be classified under 730719; if it were a casting of stainless steel for other non-pipe-fitting uses, it might be classified under 7325, etc. The key differences lie in material (stainless steel), manufacturing process (casting), and use (pipe fitting).
📝 Declaration Elements
Product Name: The standard name of the declared commodity should be detailed and specific, such as 'stainless steel cast flange', 'stainless steel cast elbow', etc., avoiding the general term 'stainless steel casting'. Material: Specify the specific grade or composition of stainless steel, such as 304, 316, etc., and whether it meets the definition of stainless steel (chromium content ≥10.5%). Manufacturing Process: Indicate whether it is casting or forging, etc. For 730711, it must be casting, and the casting method (sand casting, precision casting, etc.) may be noted. Use: Explain the specific use, such as for pipe connection, boilers, valves, etc., to confirm that it belongs to pipe fittings. Specifications and Model: Provide dimensions, pressure rating, connection method (flange, thread, butt welding, etc.), such as DN50, PN16, flange connection. Brand: If there is a brand, declare the brand name; if no brand, indicate 'no brand'. GTIN: If there is a Global Trade Item Number (GTIN), declare it; if not, leave blank. Inspection and Quarantine Category: According to customs requirements, pressure vessels, etc., may require declaration of inspection and quarantine category. Product Name: Stainless steel cast flange; Material: Stainless steel 304; Manufacturing Process: Casting (sand casting); Use: For pipe connection; Specifications and Model: DN50, PN16, flange connection; Brand: No brand; GTIN: None; Inspection and Quarantine Category: None. Misclassifying forged pipe fittings under 730711, when they should actually be classified under 730721. Unclear material declaration, such as only writing 'stainless steel' without providing grade, easily leading to classification disputes. Unclear use description, such as failing to state that it is used for pipe connection, may result in classification under other headings.
Product Name
The standard name of the declared commodity should be detailed and specific, such as 'stainless steel cast flange', 'stainless steel cast elbow', etc., avoiding the general term 'stainless steel casting'.
⚠️ Only writing 'stainless steel casting' without specifying the specific type and use.
Material
Specify the specific grade or composition of stainless steel, such as 304, 316, etc., and whether it meets the definition of stainless steel (chromium content ≥10.5%).
⚠️ Only writing 'stainless steel' without providing grade or composition, leading to classification disputes.
Manufacturing Process
Indicate whether it is casting or forging, etc. For 730711, it must be casting, and the casting method (sand casting, precision casting, etc.) may be noted.
⚠️ Misreporting forgings as castings, or failing to indicate the process.
Use
Explain the specific use, such as for pipe connection, boilers, valves, etc., to confirm that it belongs to pipe fittings.
⚠️ Failing to explain the use, which may result in classification under other headings.
Specifications and Model
Provide dimensions, pressure rating, connection method (flange, thread, butt welding, etc.), such as DN50, PN16, flange connection.
⚠️ Incomplete specification description, affecting customs judgment on classification.
Brand
If there is a brand, declare the brand name; if no brand, indicate 'no brand'.
⚠️ Ignoring brand declaration, or brand inconsistent with the actual product.
GTIN
If there is a Global Trade Item Number (GTIN), declare it; if not, leave blank.
⚠️ Failing to declare GTIN as required.
Inspection and Quarantine Category
According to customs requirements, pressure vessels, etc., may require declaration of inspection and quarantine category.
⚠️ Omitting inspection and quarantine information, causing customs clearance delays.
Example： Product Name: Stainless steel cast flange; Material: Stainless steel 304; Manufacturing Process: Casting (sand casting); Use: For pipe connection; Specifications and Model: DN50, PN16, flange connection; Brand: No brand; GTIN: None; Inspection and Quarantine Category: None.
Common Mistakes：
Misclassifying forged pipe fittings under 730711, when they should actually be classified under 730721.
Unclear material declaration, such as only writing 'stainless steel' without providing grade, easily leading to classification disputes.
Unclear use description, such as failing to state that it is used for pipe connection, may result in classification under other headings.
🎯 Classification Logic
The core criteria for classification are: 1. Material is stainless steel (meeting the definition of stainless steel in Chapter 72 notes); 2. Manufacturing process is casting; 3. Use is pipe fitting (for pipe connection). At the same time, the provisions of Chapter 73 notes and heading 7307 must be met. If it is made of stainless steel but not a casting, it is classified under 730721; if it is a casting of other iron or steel, it is classified under 730719; if it is made of stainless steel but not a pipe fitting, it may be classified under 7325. 730721 Forged pipe fittings of stainless steel: Manufacturing process is forging rather than casting, other conditions being the same. 730719 Cast pipe fittings of other iron or steel: Material is other iron or steel (not stainless steel), manufacturing process is casting. 730722 Threaded pipe fittings of stainless steel: Manufacturing process may be casting or forging, but specifically refers to threaded connection, and the subheading division is different. 732510 Other castings of stainless steel: Non-pipe-fitting use, such as mechanical parts, etc. 848180 Valves and similar devices: Valves and other fluid control devices, although they may be stainless steel castings, their function is to control fluids, classified under 8481. Is the material stainless steel (chromium content ≥10.5%)? Is the manufacturing process casting? Is the use pipe connection (pipe fitting)? Does it belong to valves and other fluid control devices? Are complete specifications, model, and use description provided?
Basis
The core criteria for classification are: 1. Material is stainless steel (meeting the definition of stainless steel in Chapter 72 notes); 2. Manufacturing process is casting; 3. Use is pipe fitting (for pipe connection). At the same time, the provisions of Chapter 73 notes and heading 7307 must be met. If it is made of stainless steel but not a casting, it is classified under 730721; if it is a casting of other iron or steel, it is classified under 730719; if it is made of stainless steel but not a pipe fitting, it may be classified under 7325.
Confused Codes：
730721 - Forged pipe fittings of stainless steel
Manufacturing process is forging rather than casting, other conditions being the same.
730719 - Cast pipe fittings of other iron or steel
Material is other iron or steel (not stainless steel), manufacturing process is casting.
730722 - Threaded pipe fittings of stainless steel
Manufacturing process may be casting or forging, but specifically refers to threaded connection, and the subheading division is different.
732510 - Other castings of stainless steel
Non-pipe-fitting use, such as mechanical parts, etc.
848180 - Valves and similar devices
Valves and other fluid control devices, although they may be stainless steel castings, their function is to control fluids, classified under 8481.
Self-Check：
✓ Is the material stainless steel (chromium content ≥10.5%)?
✓ Is the manufacturing process casting?
✓ Is the use pipe connection (pipe fitting)?
✓ Does it belong to valves and other fluid control devices?
✓ Are complete specifications, model, and use description provided?
❓ FAQ
How to query the import tax rate for 730711? You can check the most-favored-nation rate, general rate, VAT rate, etc., by entering HS code 730711 on the General Administration of Customs website, China International Trade Single Window, or third-party query platforms. Note that tax rates are subject to policy adjustments, and the latest official release should prevail. What is the difference in classification between stainless steel castings and forgings? The main difference lies in the manufacturing process. Castings are classified under 730711 (stainless steel), forgings under 730721 (stainless steel). When declaring, process certification such as casting process description or forging certificate should be provided for correct customs classification. If my product is a stainless steel casting but used for non-pipe connection, which code should it be classified under? If the stainless steel casting is not used as a pipe fitting, for example as a mechanical part, pump body, etc., it should not be classified under 730711, but may be classified under 7325 (other castings of iron or steel) or other headings according to specific use, such as 8413 (pumps), etc. Judgment should be based on product function. What special documents are required when declaring 730711? Generally, basic documents such as contract, invoice, packing list, and bill of lading are required. If pressure vessels are involved, a pressure vessel manufacturing license, inspection certificate, etc., may be required. In addition, customs may require material certification, process description, etc., to confirm classification. What is the difference between 730711 and 730722? 730711 refers to cast pipe fittings of stainless steel, while 730722 refers to threaded pipe fittings of stainless steel. The latter may include casting or forging, but specifically refers to threaded connection. If the product is cast and threaded, it should be preferentially classified under 730722, because subheading 730722 is more specific. Can 730711 be used for cross-border e-commerce retail export of stainless steel castings? Yes, but note that cross-border e-commerce export declaration requirements may be simplified, but the HS code still needs to be accurately declared. If the product meets the definition of 730711, use that code. Also pay attention to export tax rebates, regulatory conditions, etc., and it is recommended to consult a professional customs broker. How to determine whether a stainless steel casting meets the 'pipe fitting' definition of 730711? Pipe fittings refer to components used for connection, branching, and sealing in piping systems, such as flanges, elbows, tees, etc. If the product is used for pipe connection, even if subsequently used for other equipment, it can still be regarded as a pipe fitting. But if the product itself is part of equipment (such as a pump casing), it is not a pipe fitting. What are the regulatory conditions for 730711? Regulatory conditions vary by country/region. In China, general imports have no special regulatory conditions, but may involve inspection and quarantine (such as for pressure pipelines). For exports, attention should be paid to whether export licenses, dual-use items, etc., are involved. For details, consult the Customs Import and Export Tariff or local customs.
Q: How to query the import tax rate for 730711?
A: You can check the most-favored-nation rate, general rate, VAT rate, etc., by entering HS code 730711 on the General Administration of Customs website, China International Trade Single Window, or third-party query platforms. Note that tax rates are subject to policy adjustments, and the latest official release should prevail.
Q: What is the difference in classification between stainless steel castings and forgings?
A: The main difference lies in the manufacturing process. Castings are classified under 730711 (stainless steel), forgings under 730721 (stainless steel). When declaring, process certification such as casting process description or forging certificate should be provided for correct customs classification.
Q: If my product is a stainless steel casting but used for non-pipe connection, which code should it be classified under?
A: If the stainless steel casting is not used as a pipe fitting, for example as a mechanical part, pump body, etc., it should not be classified under 730711, but may be classified under 7325 (other castings of iron or steel) or other headings according to specific use, such as 8413 (pumps), etc. Judgment should be based on product function.
Q: What special documents are required when declaring 730711?
A: Generally, basic documents such as contract, invoice, packing list, and bill of lading are required. If pressure vessels are involved, a pressure vessel manufacturing license, inspection certificate, etc., may be required. In addition, customs may require material certification, process description, etc., to confirm classification.
Q: What is the difference between 730711 and 730722?
A: 730711 refers to cast pipe fittings of stainless steel, while 730722 refers to threaded pipe fittings of stainless steel. The latter may include casting or forging, but specifically refers to threaded connection. If the product is cast and threaded, it should be preferentially classified under 730722, because subheading 730722 is more specific.
Q: Can 730711 be used for cross-border e-commerce retail export of stainless steel castings?
A: Yes, but note that cross-border e-commerce export declaration requirements may be simplified, but the HS code still needs to be accurately declared. If the product meets the definition of 730711, use that code. Also pay attention to export tax rebates, regulatory conditions, etc., and it is recommended to consult a professional customs broker.
Q: How to determine whether a stainless steel casting meets the 'pipe fitting' definition of 730711?
A: Pipe fittings refer to components used for connection, branching, and sealing in piping systems, such as flanges, elbows, tees, etc. If the product is used for pipe connection, even if subsequently used for other equipment, it can still be regarded as a pipe fitting. But if the product itself is part of equipment (such as a pump casing), it is not a pipe fitting.
Q: What are the regulatory conditions for 730711?
A: Regulatory conditions vary by country/region. In China, general imports have no special regulatory conditions, but may involve inspection and quarantine (such as for pressure pipelines). For exports, attention should be paid to whether export licenses, dual-use items, etc., are involved. For details, consult the Customs Import and Export Tariff or local customs.
⚠️ 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.