HS 851521 Machines and apparatus for resistance welding of metal
Quick Answer: Machines and apparatus for resistance welding of metal imported under HS 851521 enter the UK at 0.00%, the EU at 2.70% ad valorem, and the US at rates ranging from Free to 35% ad valorem. This HS code specifically covers automated and semi-automated machines designed for joining metal parts using electrical resistance. Importers should be aware of potential variations in US duty rates based on specific product types and country of origin. According to CustomTariffs data, understanding these differing tariff structures is crucial for accurate landed cost calculations and compliance.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8515210000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8515210000 | 2.70 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 8515210000 | Free | — | ["No."] |
Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).
Data compiled and presented by HSRates.
How to Classify This HS Code?
What products does HS 851521 cover?
This subheading covers automatic or semi-automatic machines and apparatus specifically designed for resistance welding of metal. According to the WCO Harmonized System Nomenclature, this includes machines that join metal parts by applying heat generated through electrical resistance, often combined with pressure. Official definitions from sources like the USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database confirm that this category encompasses spot welding, seam welding, and projection welding machines, provided they operate on the principle of resistance heating.
What falls outside HS 851521?
The following products are excluded from HS 851521: machines for arc welding, laser welding, or ultrasonic welding, as these utilize different joining principles. Also excluded are manual welding tools that are not integrated into an automatic or semi-automatic apparatus, and machines primarily designed for soldering or brazing, even if they involve electrical resistance. For instance, a simple soldering iron or a gas-powered brazing torch would be classified elsewhere under Heading 8515.
What are common classification mistakes for HS 851521?
A common error is misclassifying machines that perform resistance welding but are integrated into a larger production line or assembly system. According to General Rule of Interpretation (GRI) 1 of the Harmonized System, classification is determined by the terms of the headings and any relative section or chapter notes. If a machine's primary function is resistance welding, it should be classified here, even if it has ancillary functions. Confusing resistance welding with other welding methods like arc welding is also a frequent mistake.
How should importers classify products under HS 851521?
The correct procedure for classifying machines under HS 851521 involves a thorough review of the product's technical specifications and operational principles. Importers and customs brokers must determine if the machine utilizes electrical resistance to generate heat for joining metal parts and if it operates automatically or semi-automatically. Consulting the official tariff schedules of the importing country, such as the USITC HTS or the UK Trade Tariff, and referencing the WCO Explanatory Notes are crucial steps to ensure accurate classification.
How is the duty calculated for products under HS 851521?
A KUKA KR 1000 titan arc robotic welding system, declared at a customs value of $250,000 USD, would attract a US duty of $12,500. This is calculated using the Most Favored Nation (MFN) duty rate of 5.0% ad valorem, as published in the USITC Harmonized Tariff Schedule (HTS) for machines for resistance welding of metals. The calculation is: 5.0% × $250,000 USD = $12,500 USD.
Which trade agreements reduce duties for HS 851521?
Several free trade agreements may reduce the applicable duty rate for HS 851521, including the United States-Mexico-Canada Agreement (USMCA), which can lead to a duty rate of Free for qualifying goods originating from Canada or Mexico. The Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) may also offer preferential rates for goods from member countries. To claim these preferences, a self-certified origin statement is typically required for USMCA, while specific origin certificates might be needed for other agreements.
```Which HS Codes Are Related?
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FAQ
What are the typical import duty rates for HS code 851521, covering machines and apparatus for resistance welding of metal?
The duty rates for HS code 851521 can vary significantly based on the country of origin and applicable trade agreements. For instance, under the U.S. Harmonized Tariff Schedule (USHTS), the Most Favored Nation (MFN) rate is 2.70% ad valorem. However, goods from countries with preferential trade agreements may have lower or zero duty rates. For example, goods originating from Canada or Mexico under the USMCA may be eligible for duty-free entry. Always consult the latest USITC tariff data for the most accurate and current rates applicable to your specific import.
How is the import duty for HS code 851521 calculated? Can you provide an example?
The duty for HS code 851521 is typically calculated on an ad valorem basis, meaning it's a percentage of the customs value of the imported goods. For example, if a resistance welding machine valued at $10,000 is imported into the U.S. and is subject to the MFN duty rate of 2.70%, the import duty would be calculated as: $10,000 (Customs Value) × 0.0270 (Duty Rate) = $270.00. Ensure accurate valuation and correct application of the duty rate based on the origin of the goods.
What specific criteria distinguish machines for resistance welding (HS 851521) from other welding equipment?
HS code 851521 specifically covers 'Machines and apparatus for resistance welding of metal.' Resistance welding relies on the heat generated by electrical resistance at the point of contact between metal parts to create a weld. This includes processes like spot welding, seam welding, and projection welding. Machines that use other welding principles, such as arc welding (e.g., TIG, MIG) or gas welding, would fall under different HS codes, typically within heading 8515. The key differentiator is the method of generating heat for welding.
What documentation is typically required when importing machines classified under HS code 851521?
When importing machines under HS code 851521, standard import documentation is generally required. This includes a commercial invoice detailing the value, quantity, and description of the goods; a packing list; a bill of lading or air waybill for transport; and a certificate of origin to determine applicable duty rates and trade agreement benefits. Depending on the country of import and the specific machine, additional certifications related to electrical safety standards or environmental compliance might be necessary. Always verify specific requirements with the customs authority of the importing country.
Are there specific trade agreements that commonly provide preferential duty rates for HS code 851521 imports into major markets like the US, EU, or UK?
Yes, trade agreements significantly impact duty rates for HS 851521. In the United States, the United States-Mexico-Canada Agreement (USMCA) often allows for duty-free entry for qualifying goods. The EU's Generalized Scheme of Preferences (GSP) and various Free Trade Agreements (FTAs) with partner countries can also reduce or eliminate duties within the EU. Similarly, the UK has its own set of FTAs post-Brexit, which may offer preferential rates for goods originating from partner nations. Importers must ensure they can prove the origin of the goods to claim these preferential rates, often requiring a valid certificate of origin.