Chapter 73 covers iron and steel articles, including tubes, hollow profiles, iron and steel structures, containers, cables, etc. This chapter ranges from 7301 to 7326 and involves iron and steel products made by casting, forging, welding, and other processes. Heading 7306 is the heading in this chapter for steel tubes and hollow profiles, and is a category with relatively large trade volume among iron and steel products. Heading 7306 covers steel tubes and hollow profiles, including seamless tubes and welded tubes, but excludes tube fittings clearly falling under other headings (such as pipe fittings under 7307) or tubes already made into specific articles. Under 7306, there are multiple subheadings distinguished by use, material, outer diameter, etc. 730622 is specifically for welded tubes for oil drilling. First 2 digits 73: Chapter 73, iron and steel articles. Digits 3-4 06: heading 7306, steel tubes and hollow profiles (for example, closed by welding, riveting, or similar methods). Digits 5-6 22: subheading 730622, specifically welded tubes for oil drilling, namely welded steel tubes used for oil or natural gas drilling, usually conforming to standards such as API 5L or API 5CT. This subheading is further subdivided according to whether the outer diameter exceeds 406.4 mm, etc., but 730622 itself refers to welded tubes for oil drilling. The goods are welded tubes for oil drilling, whose core characteristics are manufacture by welding and dedicated use for oil drilling. If they were seamless tubes, they would be classified under 7304; if they were welded tubes for other uses, they would be classified under other subheadings of 7306. 730622 clearly points to oil drilling use, and is distinguished from other subheadings of 7306 (such as 730630 other welded tubes) by use and standard.
Chapter
Chapter 73 covers iron and steel articles, including tubes, hollow profiles, iron and steel structures, containers, cables, etc. This chapter ranges from 7301 to 7326 and involves iron and steel products made by casting, forging, welding, and other processes. Heading 7306 is the heading in this chapter for steel tubes and hollow profiles, and is a category with relatively large trade volume among iron and steel products.
Heading
Heading 7306 covers steel tubes and hollow profiles, including seamless tubes and welded tubes, but excludes tube fittings clearly falling under other headings (such as pipe fittings under 7307) or tubes already made into specific articles. Under 7306, there are multiple subheadings distinguished by use, material, outer diameter, etc. 730622 is specifically for welded tubes for oil drilling.
Digit Breakdown
First 2 digits 73: Chapter 73, iron and steel articles. Digits 3-4 06: heading 7306, steel tubes and hollow profiles (for example, closed by welding, riveting, or similar methods). Digits 5-6 22: subheading 730622, specifically welded tubes for oil drilling, namely welded steel tubes used for oil or natural gas drilling, usually conforming to standards such as API 5L or API 5CT. This subheading is further subdivided according to whether the outer diameter exceeds 406.4 mm, etc., but 730622 itself refers to welded tubes for oil drilling.
Classification Basis
The goods are welded tubes for oil drilling, whose core characteristics are manufacture by welding and dedicated use for oil drilling. If they were seamless tubes, they would be classified under 7304; if they were welded tubes for other uses, they would be classified under other subheadings of 7306. 730622 clearly points to oil drilling use, and is distinguished from other subheadings of 7306 (such as 730630 other welded tubes) by use and standard.
📝 Declaration Elements
Product name: Declare the product name accurately as welded tubes for oil drilling, and avoid generally writing steel pipes. Material: Fill in the steel grade and chemical composition, such as carbon steel, alloy steel, etc., and indicate the standard. Specification and model: Fill in dimensions such as outer diameter, wall thickness, and length, as well as the model such as API 5L X70. Use: Clearly declare use for oil or natural gas drilling, not other uses. Processing method: Indicate the welding process, such as electric resistance welding, submerged arc welding, etc. Brand: Fill in the manufacturer or brand; if there is no brand, write none. Standard: Fill in the applicable standard, such as API 5L, API 5CT, etc. Product name: welded tubes for oil drilling; Material: carbon steel, grade X70; Specifications: outer diameter 508 mm, wall thickness 12.7 mm, length 12 m; Use: for oil drilling; Processing method: submerged arc welding; Brand: Baosteel; Standard: API 5L. Mistakenly declaring welded tubes for oil drilling as seamless tubes, resulting in classification under 7304. Unclear declaration of use, such as writing transportation pipelines, which may lead to classification under other subheadings of 7306. Incomplete specifications and model, lacking outer diameter or wall thickness, affecting subheading subdivision.
Product name
Declare the product name accurately as welded tubes for oil drilling, and avoid generally writing steel pipes.
⚠️ Mistakenly writing seamless tubes or ordinary welded tubes.
Material
Fill in the steel grade and chemical composition, such as carbon steel, alloy steel, etc., and indicate the standard.
⚠️ Only writing steel, without specifying the specific material and standard.
Specification and model
Fill in dimensions such as outer diameter, wall thickness, and length, as well as the model such as API 5L X70.
⚠️ Omitting outer diameter or wall thickness, causing classification difficulties.
Use
Clearly declare use for oil or natural gas drilling, not other uses.
⚠️ Writing use for pipeline transportation, which may lead to classification under other codes.
Processing method
Indicate the welding process, such as electric resistance welding, submerged arc welding, etc.
⚠️ Not indicating the welding method, which may cause it to be mistaken for a seamless tube.
Brand
Fill in the manufacturer or brand; if there is no brand, write none.
⚠️ Confusing brand with manufacturer.
Standard
Fill in the applicable standard, such as API 5L, API 5CT, etc.
⚠️ Not filling in the standard, affecting classification.
Example： Product name: welded tubes for oil drilling; Material: carbon steel, grade X70; Specifications: outer diameter 508 mm, wall thickness 12.7 mm, length 12 m; Use: for oil drilling; Processing method: submerged arc welding; Brand: Baosteel; Standard: API 5L.
Common Mistakes：
Mistakenly declaring welded tubes for oil drilling as seamless tubes, resulting in classification under 7304.
Unclear declaration of use, such as writing transportation pipelines, which may lead to classification under other subheadings of 7306.
Incomplete specifications and model, lacking outer diameter or wall thickness, affecting subheading subdivision.
🎯 Classification Logic
The core basis for classification is: 1. the material is iron or steel; 2. the processing method is welding; 3. the use is oil drilling. All three conditions must be met simultaneously to classify under 730622. If it is a seamless tube, it is classified under 7304; if it is a welded tube for other uses, it is classified under other subheadings of 7306; if it is a pipe fitting, it is classified under 7307. 7304 Seamless steel tubes: Seamless tubes are made by piercing and rolling and have no weld seam; welded tubes have a weld seam. Seamless tubes for oil drilling are classified under 7304, while welded tubes are classified under 730622. 730630 Other welded tubes: 730630 is for circular welded tubes for other uses, not dedicated to oil drilling. If the use is not oil drilling, it is classified under this code. 730629 Other welded tubes for oil drilling: 730629 is for other welded tubes for oil drilling, possibly referring to non-circular cross-sections or special specifications, while 730622 usually refers to circular cross-sections. 7307 Pipe fittings: 7307 is for pipe fittings such as elbows and flanges, which have been made into specific connecting parts, while 730622 is for the tube itself. Confirm whether the product is manufactured by a welding process. Confirm whether the use is for oil or natural gas drilling. Confirm whether the cross-section is circular. Confirm whether the material is iron or steel. Confirm whether it has not been further processed into pipe fittings.
Basis
The core basis for classification is: 1. the material is iron or steel; 2. the processing method is welding; 3. the use is oil drilling. All three conditions must be met simultaneously to classify under 730622. If it is a seamless tube, it is classified under 7304; if it is a welded tube for other uses, it is classified under other subheadings of 7306; if it is a pipe fitting, it is classified under 7307.
Confused Codes：
7304 - Seamless steel tubes
Seamless tubes are made by piercing and rolling and have no weld seam; welded tubes have a weld seam. Seamless tubes for oil drilling are classified under 7304, while welded tubes are classified under 730622.
730630 - Other welded tubes
730630 is for circular welded tubes for other uses, not dedicated to oil drilling. If the use is not oil drilling, it is classified under this code.
730629 - Other welded tubes for oil drilling
730629 is for other welded tubes for oil drilling, possibly referring to non-circular cross-sections or special specifications, while 730622 usually refers to circular cross-sections.
7307 - Pipe fittings
7307 is for pipe fittings such as elbows and flanges, which have been made into specific connecting parts, while 730622 is for the tube itself.
Self-Check：
✓ Confirm whether the product is manufactured by a welding process.
✓ Confirm whether the use is for oil or natural gas drilling.
✓ Confirm whether the cross-section is circular.
✓ Confirm whether the material is iron or steel.
✓ Confirm whether it has not been further processed into pipe fittings.
❓ FAQ
How do I look up the HS code for welded tubes for oil drilling? First determine that the product is a welded tube made of iron or steel and is dedicated to oil drilling. Then look up heading 7306 in Chapter 73, subheading 730622. You may refer to the Import and Export Tariff or customs classification decisions. What is the difference in classification between welded tubes for oil drilling and seamless tubes? Seamless tubes are classified under 7304, and welded tubes under 7306. If they are welded tubes for oil drilling, they are classified under 730622; if they are seamless tubes for oil drilling, they are classified under other subheadings of 7304. Which elements are most prone to error during declaration? Common errors include unclear declaration of use, failure to indicate welding in the processing method, and incomplete specifications and model. These may lead to classification errors or rejection of the declaration. If welded tubes for oil drilling are used in other fields, how are they classified? If used in other fields, such as transportation pipelines, they cannot be classified under 730622 and should be classified as other welded tubes under 730630 or other corresponding subheadings. Are API 5L standard tubes necessarily classified under 730622? Not necessarily. API 5L is a line pipe standard. If used for oil drilling, it may be classified under 730622; if used for transportation, it may be classified under 730630. Judgment must be based on actual use. What is the difference between 730622 and 730629? 730622 is for circular welded tubes for oil drilling, and 730629 is for other welded tubes for oil drilling (such as non-circular cross-sections). They must be distinguished according to cross-sectional shape. What documents are required for importing welded tubes for oil drilling? Usually contracts, invoices, packing lists, bills of lading, certificates of origin, and certificates conforming to API standards are required. Specific requirements are subject to customs.
Q: How do I look up the HS code for welded tubes for oil drilling?
A: First determine that the product is a welded tube made of iron or steel and is dedicated to oil drilling. Then look up heading 7306 in Chapter 73, subheading 730622. You may refer to the Import and Export Tariff or customs classification decisions.
Q: What is the difference in classification between welded tubes for oil drilling and seamless tubes?
A: Seamless tubes are classified under 7304, and welded tubes under 7306. If they are welded tubes for oil drilling, they are classified under 730622; if they are seamless tubes for oil drilling, they are classified under other subheadings of 7304.
Q: Which elements are most prone to error during declaration?
A: Common errors include unclear declaration of use, failure to indicate welding in the processing method, and incomplete specifications and model. These may lead to classification errors or rejection of the declaration.
Q: If welded tubes for oil drilling are used in other fields, how are they classified?
A: If used in other fields, such as transportation pipelines, they cannot be classified under 730622 and should be classified as other welded tubes under 730630 or other corresponding subheadings.
Q: Are API 5L standard tubes necessarily classified under 730622?
A: Not necessarily. API 5L is a line pipe standard. If used for oil drilling, it may be classified under 730622; if used for transportation, it may be classified under 730630. Judgment must be based on actual use.
Q: What is the difference between 730622 and 730629?
A: 730622 is for circular welded tubes for oil drilling, and 730629 is for other welded tubes for oil drilling (such as non-circular cross-sections). They must be distinguished according to cross-sectional shape.
Q: What documents are required for importing welded tubes for oil drilling?
A: Usually contracts, invoices, packing lists, bills of lading, certificates of origin, and certificates conforming to API standards are required. Specific requirements are subject to 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.