Chapter 73 covers articles of iron or steel, including semi-finished and finished products such as plates, sheets, tubes, profiles, and wire of iron or steel, but excludes primary materials such as ferrous waste and scrap, iron or steel powders, and ferro-alloys. This chapter has a broad scope, covering everything from iron or steel structures, pipe fittings, and containers to household articles of iron or steel, and is an important chapter for the classification of iron and steel commodities in international trade. Heading 7307 specifically covers pipe fittings of iron or steel, including pipe joints, elbows, flanges, threaded fittings, etc., of cast iron, stainless steel, and other iron or steel materials. These fittings are used to connect, branch, or seal piping systems and are commonly found in fluid transportation fields such as water, gas, and oil. Under 7307, they are further subdivided according to material and processing method. The first 2 digits 73 indicate Chapter 73, articles of iron or steel; digits 3-4, 07, indicate heading 7307, namely pipe fittings of iron or steel; digits 5-6, 22, indicate subheading 730722, specifically threaded fittings of stainless steel. Among these, subheading 7307.22 specifically refers to threaded fittings made of stainless steel, distinguishing them from those of other materials (such as cast iron 7307.11 or other iron or steel 7307.19) or non-threaded connection methods (such as butt welding 7307.23). The product is a threaded fitting of stainless steel, which conforms to the description of 7307.22: the material is stainless steel, the connection method is threaded, and the use is pipe connection. Adjacent codes such as 7307.11 (threaded fittings of cast iron) are excluded because the material is different; 7307.19 (other threaded fittings of iron or steel) is excluded because the material is not stainless steel; 7307.23 (butt welding fittings of stainless steel) is excluded because the connection method is different.
Chapter
Chapter 73 covers articles of iron or steel, including semi-finished and finished products such as plates, sheets, tubes, profiles, and wire of iron or steel, but excludes primary materials such as ferrous waste and scrap, iron or steel powders, and ferro-alloys. This chapter has a broad scope, covering everything from iron or steel structures, pipe fittings, and containers to household articles of iron or steel, and is an important chapter for the classification of iron and steel commodities in international trade.
Heading
Heading 7307 specifically covers pipe fittings of iron or steel, including pipe joints, elbows, flanges, threaded fittings, etc., of cast iron, stainless steel, and other iron or steel materials. These fittings are used to connect, branch, or seal piping systems and are commonly found in fluid transportation fields such as water, gas, and oil. Under 7307, they are further subdivided according to material and processing method.
Digit Breakdown
The first 2 digits 73 indicate Chapter 73, articles of iron or steel; digits 3-4, 07, indicate heading 7307, namely pipe fittings of iron or steel; digits 5-6, 22, indicate subheading 730722, specifically threaded fittings of stainless steel. Among these, subheading 7307.22 specifically refers to threaded fittings made of stainless steel, distinguishing them from those of other materials (such as cast iron 7307.11 or other iron or steel 7307.19) or non-threaded connection methods (such as butt welding 7307.23).
Classification Basis
The product is a threaded fitting of stainless steel, which conforms to the description of 7307.22: the material is stainless steel, the connection method is threaded, and the use is pipe connection. Adjacent codes such as 7307.11 (threaded fittings of cast iron) are excluded because the material is different; 7307.19 (other threaded fittings of iron or steel) is excluded because the material is not stainless steel; 7307.23 (butt welding fittings of stainless steel) is excluded because the connection method is different.
📝 Declaration Elements
Product name: The standard name of the declared commodity should be accurately described as stainless steel threaded fitting, avoiding colloquial or vague names. Material: Clearly specify the specific grade or composition of the stainless steel, such as 304, 316, etc., to prove that it meets the definition of stainless steel. Connection method: State that it is a threaded connection, and further indicate the thread type if possible (such as NPT, BSP, etc.). Use: Describe the application scenario of the fitting, such as for pipe connection, fluid transportation, etc. Specifications and model: Provide parameters such as the size and pressure rating of the fitting, such as DN15, 3000psi. Brand: If there is a brand, declare the brand name; if there is no brand, state no brand. Processing technology: Briefly describe the manufacturing process, such as forging, casting, machining, etc. Product name: Stainless steel threaded fitting; Material: Stainless steel 304; Connection method: Threaded (NPT); Use: For pipe connection; Specifications and model: DN15, 3000psi; Brand: No brand; Processing technology: Forging. The material declaration is not specific, only stating stainless steel without providing the grade, which may lead to classification disputes. The connection method is misreported as welding when it is actually threaded, resulting in an incorrect code. The specifications and model are inconsistent with the actual product, affecting customs inspection and classification.
Product name
The standard name of the declared commodity should be accurately described as stainless steel threaded fitting, avoiding colloquial or vague names.
⚠️ Misreporting as stainless steel pipe fitting, stainless steel joint, or other non-specific names.
Material
Clearly specify the specific grade or composition of the stainless steel, such as 304, 316, etc., to prove that it meets the definition of stainless steel.
⚠️ Writing only stainless steel without providing a specific grade or composition.
Connection method
State that it is a threaded connection, and further indicate the thread type if possible (such as NPT, BSP, etc.).
⚠️ Failing to indicate the thread standard, or misreporting it as welding, press fitting, etc.
Use
Describe the application scenario of the fitting, such as for pipe connection, fluid transportation, etc.
⚠️ The use description is too broad, such as for industrial use.
Specifications and model
Provide parameters such as the size and pressure rating of the fitting, such as DN15, 3000psi.
⚠️ Specifications and model are missing or inconsistent with the actual product.
Brand
If there is a brand, declare the brand name; if there is no brand, state no brand.
⚠️ False or omitted brand declaration.
Processing technology
Briefly describe the manufacturing process, such as forging, casting, machining, etc.
⚠️ Incorrect process description, such as writing forging as casting.
Example： Product name: Stainless steel threaded fitting; Material: Stainless steel 304; Connection method: Threaded (NPT); Use: For pipe connection; Specifications and model: DN15, 3000psi; Brand: No brand; Processing technology: Forging.
Common Mistakes：
The material declaration is not specific, only stating stainless steel without providing the grade, which may lead to classification disputes.
The connection method is misreported as welding when it is actually threaded, resulting in an incorrect code.
The specifications and model are inconsistent with the actual product, affecting customs inspection and classification.
🎯 Classification Logic
The core basis for classification is: 1) the material is stainless steel; 2) the connection method is threaded; 3) the use is pipe fittings. According to the General Rules for the Interpretation of the HS, first determine heading 7307, and then according to the subheading text, stainless steel threaded fittings are classified under 7307.22. It should be noted that if the fitting has a valve or other device, it may be classified under 8481; if it is made of cast iron, it is classified under 7307.11. 730711 Threaded fittings of cast iron: The material is cast iron, not stainless steel. 7307.11 applies to malleable cast iron threaded fittings, while 7307.22 applies only to stainless steel. 730719 Other threaded fittings of iron or steel: The material is other iron or steel (such as carbon steel), not stainless steel. If the material is carbon steel, it should be classified under 7307.19. 730723 Butt welding fittings of stainless steel: The connection method is butt welding, not threaded. 7307.23 applies to butt welding fittings of stainless steel, while threaded fittings are classified under 7307.22. 730729 Other pipe fittings of stainless steel: Non-threaded connection methods, such as press fitting, quick connection, etc. If the fitting is not threaded, it should be classified under 7307.29. 848180 Valves and similar devices: If the fitting has a valve function, such as a globe valve, ball valve, etc., it should be classified under 8481, not 7307. Is the material stainless steel? Is the connection method threaded? Is it used for pipe connection? Does it have a valve or other device? Are the specifications and model consistent with the actual product?
Basis
The core basis for classification is: 1) the material is stainless steel; 2) the connection method is threaded; 3) the use is pipe fittings. According to the General Rules for the Interpretation of the HS, first determine heading 7307, and then according to the subheading text, stainless steel threaded fittings are classified under 7307.22. It should be noted that if the fitting has a valve or other device, it may be classified under 8481; if it is made of cast iron, it is classified under 7307.11.
Confused Codes：
730711 - Threaded fittings of cast iron
The material is cast iron, not stainless steel. 7307.11 applies to malleable cast iron threaded fittings, while 7307.22 applies only to stainless steel.
730719 - Other threaded fittings of iron or steel
The material is other iron or steel (such as carbon steel), not stainless steel. If the material is carbon steel, it should be classified under 7307.19.
730723 - Butt welding fittings of stainless steel
The connection method is butt welding, not threaded. 7307.23 applies to butt welding fittings of stainless steel, while threaded fittings are classified under 7307.22.
730729 - Other pipe fittings of stainless steel
Non-threaded connection methods, such as press fitting, quick connection, etc. If the fitting is not threaded, it should be classified under 7307.29.
848180 - Valves and similar devices
If the fitting has a valve function, such as a globe valve, ball valve, etc., it should be classified under 8481, not 7307.
Self-Check：
✓ Is the material stainless steel?
✓ Is the connection method threaded?
✓ Is it used for pipe connection?
✓ Does it have a valve or other device?
✓ Are the specifications and model consistent with the actual product?
❓ FAQ
How to inquire about the HS code for stainless steel threaded fittings? First confirm that the commodity material is stainless steel, the connection method is threaded, and the use is pipe fittings. Then look up Chapter 73 of the HS code, heading 7307, subheading 730722. It can be confirmed through the customs classification inquiry system or by consulting a professional customs broker. What is the difference in HS codes between stainless steel threaded fittings and carbon steel threaded fittings? Stainless steel threaded fittings are classified under 730722, and carbon steel threaded fittings are classified under 730719. The difference lies in the material. Stainless steel has stronger corrosion resistance, and material proof is required for classification. What are the common errors in declaration? Common errors include: only writing stainless steel for the material without providing the grade, misreporting the connection method as welding, missing specifications and model, false brand declaration, etc. These may lead to classification errors or customs clearance delays. If the fitting has a valve, which code should it be classified under? If the fitting has a valve function, such as a globe valve, ball valve, etc., it should be classified under 8481, and the specific subheading is determined according to the valve type. At this time, it is no longer classified as a pipe fitting. How to inquire about the tax rate for stainless steel threaded fittings? Tax rates vary depending on the country, trade agreements, country of origin, and other factors. It is recommended to consult the Import and Export Tariff issued by the General Administration of Customs of China or use customs classification inquiry tools to obtain the latest tax rate information. How to distinguish between stainless steel butt welding fittings and threaded fittings? Butt welding fittings are connected by welding and are classified under 730723; threaded fittings are connected by threads and are classified under 730722. When declaring, the connection method must be clearly stated, and corresponding pictures or explanations should be provided. What documents are required for importing stainless steel threaded fittings? Usually, a contract, invoice, packing list, bill of lading, material certificate, certificate of origin, etc. are required. If anti-dumping or quotas are involved, corresponding supporting documents are also required. It is recommended to consult a customs broker in advance. How should stainless steel threaded fittings sold via cross-border e-commerce be classified? Cross-border e-commerce also needs to classify according to the HS code, and stainless steel threaded fittings are classified under 730722. Attention should be paid to the declared value, quantity, etc., to avoid customs penalties caused by underreporting or classification errors.
Q: How to inquire about the HS code for stainless steel threaded fittings?
A: First confirm that the commodity material is stainless steel, the connection method is threaded, and the use is pipe fittings. Then look up Chapter 73 of the HS code, heading 7307, subheading 730722. It can be confirmed through the customs classification inquiry system or by consulting a professional customs broker.
Q: What is the difference in HS codes between stainless steel threaded fittings and carbon steel threaded fittings?
A: Stainless steel threaded fittings are classified under 730722, and carbon steel threaded fittings are classified under 730719. The difference lies in the material. Stainless steel has stronger corrosion resistance, and material proof is required for classification.
Q: What are the common errors in declaration?
A: Common errors include: only writing stainless steel for the material without providing the grade, misreporting the connection method as welding, missing specifications and model, false brand declaration, etc. These may lead to classification errors or customs clearance delays.
Q: If the fitting has a valve, which code should it be classified under?
A: If the fitting has a valve function, such as a globe valve, ball valve, etc., it should be classified under 8481, and the specific subheading is determined according to the valve type. At this time, it is no longer classified as a pipe fitting.
Q: How to inquire about the tax rate for stainless steel threaded fittings?
A: Tax rates vary depending on the country, trade agreements, country of origin, and other factors. It is recommended to consult the Import and Export Tariff issued by the General Administration of Customs of China or use customs classification inquiry tools to obtain the latest tax rate information.
Q: How to distinguish between stainless steel butt welding fittings and threaded fittings?
A: Butt welding fittings are connected by welding and are classified under 730723; threaded fittings are connected by threads and are classified under 730722. When declaring, the connection method must be clearly stated, and corresponding pictures or explanations should be provided.
Q: What documents are required for importing stainless steel threaded fittings?
A: Usually, a contract, invoice, packing list, bill of lading, material certificate, certificate of origin, etc. are required. If anti-dumping or quotas are involved, corresponding supporting documents are also required. It is recommended to consult a customs broker in advance.
Q: How should stainless steel threaded fittings sold via cross-border e-commerce be classified?
A: Cross-border e-commerce also needs to classify according to the HS code, and stainless steel threaded fittings are classified under 730722. Attention should be paid to the declared value, quantity, etc., to avoid customs penalties caused by underreporting or classification errors.
⚠️ 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.