Chapter 72 covers the smelting, rolling, and primary products of iron and steel, including pig iron, ferroalloys, scrap, ingots, semi-finished products, flat-rolled products, bars and rods, wire rods, angles, shapes, sections, tubes, and hollow profiles. This chapter is the basic classification chapter for iron and steel products, covering a broad range from raw materials to semi-finished products, but excludes articles that have been further processed (such as wire ropes, nails, etc., which fall under Chapter 73). Heading 7217 specifically covers wire, i.e., wire products drawn from hot-rolled or cold-rolled iron or steel. It includes low-carbon steel wire, high-carbon steel wire, alloy steel wire, etc., but is limited to wire that is not plated or coated; if it has undergone coating treatment such as galvanizing or copper plating, it falls under the corresponding subheading under 7217 or a further processed heading. This heading is subdivided by carbon content, cross-sectional shape, coating status, etc. HS code 721790 is a 6-digit subheading: the first 2 digits "72" represent Chapter 72 (Iron and steel); digits 3-4 "17" represent heading 7217 (Wire); digits 5-6 "90" represent the subheading "Other," i.e., carbon steel wire not named in other subheadings. Specifically, under heading 7217 there are already 721710 (wire not plated or coated, whether or not polished), 721720 (wire plated or coated with zinc), 721730 (wire plated or coated with other base metals), etc., while 721790 covers other carbon steel wire beyond the above, such as plastic-coated, painted, or otherwise surface-treated carbon steel wire. This product is carbon steel wire and does not fall within the scope of not plated or coated (721710), zinc-plated (721720), or plated with other base metals (721730), so it is classified under 721790 "Other." If the wire is made of alloy steel, it should be classified under 7229; if it has been processed into articles such as wire ropes or nails, it should be classified under Chapter 73.
Chapter
Chapter 72 covers the smelting, rolling, and primary products of iron and steel, including pig iron, ferroalloys, scrap, ingots, semi-finished products, flat-rolled products, bars and rods, wire rods, angles, shapes, sections, tubes, and hollow profiles. This chapter is the basic classification chapter for iron and steel products, covering a broad range from raw materials to semi-finished products, but excludes articles that have been further processed (such as wire ropes, nails, etc., which fall under Chapter 73).
Heading
Heading 7217 specifically covers wire, i.e., wire products drawn from hot-rolled or cold-rolled iron or steel. It includes low-carbon steel wire, high-carbon steel wire, alloy steel wire, etc., but is limited to wire that is not plated or coated; if it has undergone coating treatment such as galvanizing or copper plating, it falls under the corresponding subheading under 7217 or a further processed heading. This heading is subdivided by carbon content, cross-sectional shape, coating status, etc.
Digit Breakdown
HS code 721790 is a 6-digit subheading: the first 2 digits "72" represent Chapter 72 (Iron and steel); digits 3-4 "17" represent heading 7217 (Wire); digits 5-6 "90" represent the subheading "Other," i.e., carbon steel wire not named in other subheadings. Specifically, under heading 7217 there are already 721710 (wire not plated or coated, whether or not polished), 721720 (wire plated or coated with zinc), 721730 (wire plated or coated with other base metals), etc., while 721790 covers other carbon steel wire beyond the above, such as plastic-coated, painted, or otherwise surface-treated carbon steel wire.
Classification Basis
This product is carbon steel wire and does not fall within the scope of not plated or coated (721710), zinc-plated (721720), or plated with other base metals (721730), so it is classified under 721790 "Other." If the wire is made of alloy steel, it should be classified under 7229; if it has been processed into articles such as wire ropes or nails, it should be classified under Chapter 73.
📝 Declaration Elements
Product name: The Chinese and English names of the declared goods, which should accurately reflect the material and form, such as "other carbon steel wire." Material: Specify the specific type of carbon steel, such as low-carbon steel, medium-carbon steel, high-carbon steel, and the main chemical composition. Carbon content: Declare the carbon content by weight percentage, accurate to two decimal places, as this is the key to distinguishing carbon steel from alloy steel. Cross-sectional shape: Describe the cross-sectional shape of the steel wire, such as round, square, rectangular, etc.; for round, specify the diameter. Coating status: State whether the surface of the steel wire has undergone coating treatment, such as plastic coating, painting, phosphating, etc., and the coating material. Specifications and dimensions: Declare the diameter or cross-sectional dimensions of the steel wire, usually in millimeters. Use: Briefly explain the final use of the steel wire, such as nail making, mesh weaving, springs, etc., to assist classification. Customs declaration example:
Product name: Other carbon steel wire (plastic-coated)
Material: Low-carbon steel, carbon content 0.08%
Cross-sectional shape: Round, diameter 2.0mm
Coating status: Surface coated with polyethylene plastic
Specifications and dimensions: 2.0mm
Use: Used for manufacturing supermarket shelves
HS code: 72179000
Declaration elements: 1. Product name: Other carbon steel wire; 2. Material: Low-carbon steel; 3. Carbon content: 0.08%; 4. Cross-sectional shape: Round; 5. Coating status: Plastic-coated; 6. Specifications and dimensions: 2.0mm; 7. Use: Shelf manufacturing Failure to accurately declare carbon content, making it impossible to distinguish carbon steel from alloy steel, possibly leading to misclassification under 7229. Unclear description of coating status, such as misreporting galvanizing as plastic coating, affecting the distinction between subheadings 721720 and 721790. Cross-sectional shape and dimensions not declared in detail, possibly affecting classification and customs valuation.
Product name
The Chinese and English names of the declared goods, which should accurately reflect the material and form, such as "other carbon steel wire."
⚠️ Writing only "steel wire" without specifying carbon steel and the specific coating status.
Material
Specify the specific type of carbon steel, such as low-carbon steel, medium-carbon steel, high-carbon steel, and the main chemical composition.
⚠️ Writing vaguely "carbon steel" without distinguishing the carbon content range.
Carbon content
Declare the carbon content by weight percentage, accurate to two decimal places, as this is the key to distinguishing carbon steel from alloy steel.
⚠️ Ignoring carbon content or filling it in inaccurately, leading to classification errors.
Cross-sectional shape
Describe the cross-sectional shape of the steel wire, such as round, square, rectangular, etc.; for round, specify the diameter.
⚠️ Not specifying the shape or dimensions, affecting subheading determination.
Coating status
State whether the surface of the steel wire has undergone coating treatment, such as plastic coating, painting, phosphating, etc., and the coating material.
⚠️ Misreporting galvanized steel wire as other coating, leading to incorrect subheading classification.
Specifications and dimensions
Declare the diameter or cross-sectional dimensions of the steel wire, usually in millimeters.
⚠️ Confusing dimension units, such as misreporting inches as millimeters.
Use
Briefly explain the final use of the steel wire, such as nail making, mesh weaving, springs, etc., to assist classification.
⚠️ The use description is too broad to provide effective classification information.
Failure to accurately declare carbon content, making it impossible to distinguish carbon steel from alloy steel, possibly leading to misclassification under 7229.
Unclear description of coating status, such as misreporting galvanizing as plastic coating, affecting the distinction between subheadings 721720 and 721790.
Cross-sectional shape and dimensions not declared in detail, possibly affecting classification and customs valuation.
🎯 Classification Logic
The core basis for classification is the Import and Export Tariff and the HS Explanatory Notes. First, determine whether it is carbon steel based on material; if the carbon content exceeds a certain standard or contains alloying elements, it may be classified as alloy steel. Second, distinguish by coating status: not plated or coated goes to 721710, zinc-plated goes to 721720, plated with other base metals goes to 721730, and other coatings go to 721790. Finally, confirm that the steel wire has not been further processed into articles. 721710 Carbon steel wire not plated or coated: 721710 covers wire not plated or coated, whether or not polished; 721790 is for wire with other coatings (such as plastic coating, painting). 721720 Zinc-plated carbon steel wire: 721720 specifically refers to galvanized wire, while 721790 is for wire with other coatings other than zinc plating or plating with other base metals. 721730 Carbon steel wire plated with other base metals: 721730 refers to coatings of base metals such as copper plating, nickel plating, etc.; 721790 is for non-metallic coatings or other coatings. 722990 Other alloy steel wire: 722990 covers alloy steel wire, while 721790 is only for carbon steel wire; material is the key difference. 731300 Stranded wire, ropes, cables, etc., of iron or steel wire: 731300 is a further processed article of steel wire, such as wire rope, while 721790 is primary steel wire material. Has it been confirmed that the material is carbon steel rather than alloy steel? Has it been clarified that the coating type is not zinc and not other base metals? Has it been verified that the steel wire has not been processed into articles? Have the carbon content and cross-sectional dimensions been accurately declared? Has the latest tariff and classification decisions been consulted?
Basis
The core basis for classification is the Import and Export Tariff and the HS Explanatory Notes. First, determine whether it is carbon steel based on material; if the carbon content exceeds a certain standard or contains alloying elements, it may be classified as alloy steel. Second, distinguish by coating status: not plated or coated goes to 721710, zinc-plated goes to 721720, plated with other base metals goes to 721730, and other coatings go to 721790. Finally, confirm that the steel wire has not been further processed into articles.
Confused Codes：
721710 - Carbon steel wire not plated or coated
721710 covers wire not plated or coated, whether or not polished; 721790 is for wire with other coatings (such as plastic coating, painting).
721720 - Zinc-plated carbon steel wire
721720 specifically refers to galvanized wire, while 721790 is for wire with other coatings other than zinc plating or plating with other base metals.
721730 - Carbon steel wire plated with other base metals
721730 refers to coatings of base metals such as copper plating, nickel plating, etc.; 721790 is for non-metallic coatings or other coatings.
722990 - Other alloy steel wire
722990 covers alloy steel wire, while 721790 is only for carbon steel wire; material is the key difference.
731300 - Stranded wire, ropes, cables, etc., of iron or steel wire
731300 is a further processed article of steel wire, such as wire rope, while 721790 is primary steel wire material.
Self-Check：
✓ Has it been confirmed that the material is carbon steel rather than alloy steel?
✓ Has it been clarified that the coating type is not zinc and not other base metals?
✓ Has it been verified that the steel wire has not been processed into articles?
✓ Have the carbon content and cross-sectional dimensions been accurately declared?
✓ Has the latest tariff and classification decisions been consulted?
❓ FAQ
How to determine whether steel wire is carbon steel or alloy steel? According to the HS Explanatory Notes, carbon steel refers to steel with a carbon content of ≤2.11% by weight and without other alloying elements. If it contains a certain amount of alloying elements (such as chromium, nickel, molybdenum, etc.) and exceeds the specified limits, it is considered alloy steel. Chemical composition analysis is required for declaration. What is the difference in classification between plastic-coated steel wire and galvanized steel wire? Plastic-coated steel wire has a plastic coating on the surface, which is a non-metallic coating, and should be classified under 721790; galvanized steel wire has a zinc coating on the surface and is classified under 721720. The coating materials are different, so the classification subheadings are different. Does 721790 include stainless steel wire? No. Stainless steel wire is classified under 7223 because stainless steel is alloy steel. 721790 applies only to carbon steel wire and must meet other coating conditions. If carbon steel wire has been polished, which code should it be classified under? Polishing does not change the coating status. If it is not plated or coated, it is still classified under 721710; if it is plastic-coated after polishing, it is classified under 721790. Polishing itself does not constitute a coating. How should carbon content be filled in during declaration? The actual carbon content by weight percentage should be filled in, accurate to two decimal places, such as 0.08%. This is an important basis for distinguishing carbon steel from alloy steel and must be accurate. If the steel wire under 721790 is used to manufacture wire rope, does the classification change? If the steel wire has been processed into wire rope, it is classified under 7312; if it is only steel wire material, it remains under 721790. Classification depends on the degree of processing. How to check the import tariff rate for 721790? You can consult the Import and Export Tariff of the People's Republic of China or check through the General Administration of Customs website or the single window. The tariff rate may vary depending on trade agreements, origin, etc., and must be considered in light of specific circumstances. What specifically is the coating difference between 721790 and 721720? 721720 specifically refers to zinc coating, including electro-galvanizing, hot-dip galvanizing, etc.; 721790 refers to coatings other than zinc plating or plating with other base metals, such as plastic coating, painting, phosphating, etc. The coating material must be clearly specified during declaration.
Q: How to determine whether steel wire is carbon steel or alloy steel?
A: According to the HS Explanatory Notes, carbon steel refers to steel with a carbon content of ≤2.11% by weight and without other alloying elements. If it contains a certain amount of alloying elements (such as chromium, nickel, molybdenum, etc.) and exceeds the specified limits, it is considered alloy steel. Chemical composition analysis is required for declaration.
Q: What is the difference in classification between plastic-coated steel wire and galvanized steel wire?
A: Plastic-coated steel wire has a plastic coating on the surface, which is a non-metallic coating, and should be classified under 721790; galvanized steel wire has a zinc coating on the surface and is classified under 721720. The coating materials are different, so the classification subheadings are different.
Q: Does 721790 include stainless steel wire?
A: No. Stainless steel wire is classified under 7223 because stainless steel is alloy steel. 721790 applies only to carbon steel wire and must meet other coating conditions.
Q: If carbon steel wire has been polished, which code should it be classified under?
A: Polishing does not change the coating status. If it is not plated or coated, it is still classified under 721710; if it is plastic-coated after polishing, it is classified under 721790. Polishing itself does not constitute a coating.
Q: How should carbon content be filled in during declaration?
A: The actual carbon content by weight percentage should be filled in, accurate to two decimal places, such as 0.08%. This is an important basis for distinguishing carbon steel from alloy steel and must be accurate.
Q: If the steel wire under 721790 is used to manufacture wire rope, does the classification change?
A: If the steel wire has been processed into wire rope, it is classified under 7312; if it is only steel wire material, it remains under 721790. Classification depends on the degree of processing.
Q: How to check the import tariff rate for 721790?
A: You can consult the Import and Export Tariff of the People's Republic of China or check through the General Administration of Customs website or the single window. The tariff rate may vary depending on trade agreements, origin, etc., and must be considered in light of specific circumstances.
Q: What specifically is the coating difference between 721790 and 721720?
A: 721720 specifically refers to zinc coating, including electro-galvanizing, hot-dip galvanizing, etc.; 721790 refers to coatings other than zinc plating or plating with other base metals, such as plastic coating, painting, phosphating, etc. The coating material must be clearly specified during declaration.
⚠️ 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.