Subheading · Chapter 68 · Heading 6804
6804.21: Of agglomerated synthetic or natural diamond
Diamond grinding wheels
6804.21 is the HS subheading for diamond grinding wheels, under heading 6804 in chapter 68.
What you pay
Importing into UK
Rates by national line · UK Global Tariff
UK lines →- 6804 21 00 00 Of agglomerated synthetic or natural diamond Free
- 6804 21 00 20 Discs - of synthetic diamonds which are agglomerated with a metal alloy, ceramic alloy or plastic alloy, - having a self-sharpening effect by constant release of the diamonds, - suitable for abrasive cutting of wafers, - whether or not containing a hole in the centre, - whether or not on a support - with a weight of not more than 377 g per piece and - with an external diameter of not more than 206 mm Free
- 6804 21 00 40 Steel wire used for cropping and squaring semiconductors: -coated with diamond grains of 5µm or more, but not more than 55µm -wire diameter 23 µm or more but not more than 350 µm, -having a breaking strength of 11 n or more, but not more than 170 n Free
- 6804 21 00 50 Wheels suitable for grinding, rounding, polishing, aligning or cutting: -composed of metal base and agglomerated synthetic or natural diamonds, -whether or not containing a hole in the centre, -with an external diameter not more than 870 mm, for machines for the manufacture of semiconductor wafers Free
- 6804 21 00 90 Other Free
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 2
- Additional dutyAdditional duties 35%
- Applies to goods from
- Belarus, Russia
- Legal act
- 2022 No. 598
- Documents
- Duty suspensionSuspension - goods for certain categories of ships, boats and other vessels and for drilling or production platforms Free
- Applies to goods from
- all countries
- Legal act
- 2020 No. 1431
- Documents
- C990 End use authorisation ships and platforms (Column 8c, Annex A of Delegated Regulation (EU) 2015/2446)
Import requirements 4
- Prohibition or restrictionImport prohibition
- Applies to goods from
- North Korea
- Legal act
- S.I. 2019/411
- Import controlRestriction on entry into free circulation
- Applies to goods from
- Ukraine
- Legal act
- S.I. 2022/395
- Import controlImport control on restricted goods and technologies
- Applies to goods from
- Iran
- Legal act
- S.I. 2019/461
- Documents
- Y966 Goods other than those described in the MG footnotes linked to the measure (Missile Technology Control Regime list - Annex III of Reg. (EU) 267/2012)
- Import controlImport control - Waste
- Applies to goods from
- all countries
- Legal act
- S.I. 2019/590
- Documents
- C672 Information document accompanying shipments of waste as mentioned in Regulation (EU) 2024/1157 – Article 18 and Annex VII
- C669 Notification document as mentioned in Regulation (EU) 2024/1157 - Article 5 and Annex IA
- Y923 Product not subjected to the provisions of Regulation (EU) 2024/1157
- C670 Movement document as mentioned in Regulation (EU) 2024/1157 – Article 5 and Annex IB
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| standard rate (no agreement) | — | Free |
| DCTS Comprehensive | Afghanistan, Angola, Bangladesh, Benin and 38 moreAfghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Congo - Kinshasa, Djibouti, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Liberia, Malawi, Mali, Mauritania, Myanmar (Burma), Nepal, Niger, Rwanda, São Tomé & Príncipe, Senegal, Sierra Leone, Somalia, South Sudan, Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Yemen, Zambia | Free |
| European Union (including code "EU") | Free | |
| DCTS Enhanced | Algeria, Bolivia, Cape Verde, Congo - Brazzaville and 13 moreAlgeria, Bolivia, Cape Verde, Congo - Brazzaville, Cook Islands, Kyrgyzstan, Micronesia, Mongolia, Nigeria, Niue, Pakistan, Philippines, Sri Lanka, Syria, Tajikistan, Uzbekistan, Vanuatu | Free |
| CARIFORUM | Antigua & Barbuda, Bahamas, Barbados, Belize and 10 moreAntigua & Barbuda, Bahamas, Barbados, Belize, Dominica, Dominican Republic, Grenada, Guyana, Jamaica, St Kitts & Nevis, St Lucia, St Vincent & the Grenadines, Suriname, Trinidad & Tobago | Free |
| OCTs (Overseas Countries and Territories) | Anguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands and 7 moreAnguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands, Cayman Islands, Falkland Islands, Montserrat, Pitcairn Islands, South Georgia & South Sandwich Islands, St Helena, Turks & Caicos Islands | Free |
| Central America | Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama | Free |
| SADC EPA | Botswana, Eswatini, Lesotho, Mozambique, Namibia | Free |
| Eastern and Southern Africa States | Madagascar, Mauritius, Seychelles, Zimbabwe | Free |
| CPTPP | Brunei, Malaysia | Free |
| UK–Andorra agreement | Andorra | Free |
| UK–Albania agreement | Albania | Free |
| UK–Australia agreement | Australia | Free |
| UK–Canada agreement | Canada | Free |
| UK–Switzerland agreement | Switzerland | Free |
| UK–Côte d’Ivoire agreement | Côte d’Ivoire | Free |
| UK–Chile agreement | Chile | Free |
| UK–Cameroon agreement | Cameroon | Free |
| UK–Colombia agreement | Colombia | Free |
| UK–Ceuta & Melilla agreement | Ceuta & Melilla | Free |
| UK–Ecuador agreement | Ecuador | Free |
| UK–Egypt agreement | Egypt | Free |
| UK–Fiji agreement | Fiji | Free |
| UK–Faroe Islands agreement | Faroe Islands | Free |
| UK–Georgia agreement | Georgia | Free |
| UK–Ghana agreement | Ghana | Free |
| DCTS Standard | Indonesia | Free |
| UK–Israel agreement | Israel | Free |
| UK–India agreement | India | Free |
| UK–Iceland agreement | Iceland | Free |
| UK–Jordan agreement | Jordan | Free |
| UK–Japan agreement | Japan | Free |
| UK–Kenya agreement | Kenya | Free |
| UK–South Korea agreement | South Korea | Free |
| UK–Lebanon agreement | Lebanon | Free |
| UK–Liechtenstein agreement | Liechtenstein | Free |
| UK–Morocco agreement | Morocco | Free |
| UK–Moldova agreement | Moldova | Free |
| UK–North Macedonia agreement | North Macedonia | Free |
| UK–Mexico agreement | Mexico | Free |
| UK–Norway agreement | Norway | Free |
| UK–New Zealand agreement | New Zealand | Free |
| UK–Peru agreement | Peru | Free |
| UK–Papua New Guinea agreement | Papua New Guinea | Free |
| UK–Palestinian Territories agreement | Palestinian Territories | Free |
| UK–Serbia agreement | Serbia | Free |
| UK–Solomon Islands agreement | Solomon Islands | Free |
| UK–Singapore agreement | Singapore | Free |
| UK–San Marino agreement | San Marino | Free |
| UK–Tunisia agreement | Tunisia | Free |
| UK–Türkiye agreement | Türkiye | Free |
| UK–Ukraine agreement | Ukraine | Free |
| UK–Vietnam agreement | Vietnam | Free |
| UK–Samoa agreement | Samoa | Free |
| UK–Kosovo agreement | Kosovo | Free |
| UK–South Africa agreement | South Africa | Free |
UK: imports by month
Main suppliers, last 12 months
| Country | Value | Share | Change |
|---|---|---|---|
 China | £8.4m | 31.4% | -4.4% |
 Italy | £3.2m | 12.2% | +12.9% |
 South Korea | £3m | 11.4% | -1.2% |
 Germany | £2.1m | 8% | +14.4% |
 Spain | £1.7m | 6.4% | -3.5% |
 Austria | £1m | 3.8% | -5.2% |
 Japan | £949k | 3.6% | -2.1% |
 United States | £895k | 3.4% | -25.9% |
Same subheading in other tariffs
TürkiyeWorld trade in 2024
Trade value (US$) no reported trade < US$108.4kUS$108.4k+US$3.8m+US$28.3m+> US$218.4m
Exports: 131
- China: US$526.7m
- Japan: US$232m
- South Korea: US$229.4m
- Italy: US$218.4m
- Germany: US$177.1m
- Switzerland: US$115.1m
- United States: US$85m
- Austria: US$80.8m
- Hungary: US$50.6m
- India: US$47.6m
- Taiwan: US$41.9m
- Singapore: US$38.4m
- Spain: US$28.3m
- Netherlands: US$27.1m
- Sweden: US$26.7m
- Vietnam: US$24.1m
- Thailand: US$23.8m
- France: US$21m
- Bulgaria: US$17.7m
- Poland: US$16.5m
- Indonesia: US$14.2m
- United Kingdom: US$12m
- Belgium: US$11.8m
- Ukraine: US$10.9m
- Portugal: US$9.9m
- Luxembourg: US$9.6m
- South Africa: US$8.8m
- Czechia: US$8.1m
- Canada: US$7.7m
- Türkiye: US$7.2m
- Hong Kong SAR China: US$6.5m
- Brazil: US$3.8m
- Ireland: US$3.6m
- Israel: US$3.2m
- Slovakia: US$2.4m
- Kazakhstan: US$2m
- Slovenia: US$2m
- Mexico: US$1.9m
- Malaysia: US$1.9m
- Denmark: US$1.8m
- Russia: US$1.7m
- Finland: US$1.7m
- Australia: US$1.4m
- Lithuania: US$1.4m
- Philippines: US$720.9k
- Norway: US$460.2k
- Latvia: US$347k
- Romania: US$341k
- Chile: US$331.6k
- Greece: US$307.9k
- Serbia: US$284.5k
- Cambodia: US$279.3k
- Colombia: US$264.7k
- Bosnia & Herzegovina: US$229.4k
- Belarus: US$227.8k
- Estonia: US$218.2k
- Croatia: US$193.5k
- Panama: US$182.3k
- United Arab Emirates: US$174.5k
- Seychelles: US$141.6k
Trade value (US$) no reported trade < US$626.1kUS$626.1k+US$4.6m+US$27.6m+> US$73.5m
Imports: 211
- United States: US$230.8m
- China: US$203.9m
- Germany: US$199.6m
- Brazil: US$153.8m
- Taiwan: US$131.6m
- France: US$82m
- Spain: US$73.5m
- Switzerland: US$64.3m
- Vietnam: US$61.4m
- Italy: US$60.7m
- Poland: US$47.1m
- India: US$45.6m
- Türkiye: US$44.1m
- Austria: US$40.3m
- Mexico: US$39.2m
- Netherlands: US$37.3m
- United Kingdom: US$34.2m
- Japan: US$33.4m
- South Korea: US$29.3m
- Canada: US$29.2m
- Czechia: US$27.6m
- Singapore: US$26.7m
- Sweden: US$26.2m
- Thailand: US$24.1m
- Belgium: US$22.9m
- Hungary: US$22.4m
- Australia: US$20.8m
- Russia: US$20.2m
- Malaysia: US$19.3m
- Portugal: US$17.4m
- Indonesia: US$15.2m
- Argentina: US$13.6m
- Denmark: US$12.9m
- Romania: US$11.3m
- United Arab Emirates: US$11.1m
- Israel: US$10.3m
- Finland: US$10.2m
- Ireland: US$9.9m
- Saudi Arabia: US$9.7m
- Slovakia: US$8.9m
- South Africa: US$8.8m
- Norway: US$8.6m
- Algeria: US$8m
- Ukraine: US$7.5m
- Bangladesh: US$7.3m
- Iran: US$7.1m
- Kazakhstan: US$6.5m
- Philippines: US$6m
- Morocco: US$5.4m
- Colombia: US$5m
- Peru: US$4.9m
- Luxembourg: US$4.8m
- Slovenia: US$4.6m
- Hong Kong SAR China: US$4.4m
- Bulgaria: US$4.4m
- Lithuania: US$4.4m
- Croatia: US$4m
- Chile: US$3.9m
- Egypt: US$3.3m
- Greece: US$3.2m
Top exporters
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 | China | US$526.7m | 24.3% |
| 2 | Japan | US$232m | 10.7% |
| 3 | South Korea | US$229.4m | 10.6% |
| 4 | Italy | US$218.4m | 10.1% |
| 5 | Germany | US$177.1m | 8.2% |
| 6 |  Switzerland | US$115.1m | 5.3% |
| 7 | United States | US$85m | 3.9% |
| 8 | Austria | US$80.8m | 3.7% |
| 9 |  Hungary | US$50.6m | 2.3% |
| 10 |  India | US$47.6m | 2.2% |
Top importers
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 | United States | US$230.8m | 10.6% |
| 2 | China | US$203.9m | 9.4% |
| 3 | Germany | US$199.6m | 9.2% |
| 4 |  Brazil | US$153.8m | 7.1% |
| 5 |  Taiwan | US$131.6m | 6.1% |
| 6 |  France | US$82m | 3.8% |
| 7 | Spain | US$73.5m | 3.4% |
| 8 | Switzerland | US$64.3m | 3% |
| 9 |  Vietnam | US$61.4m | 2.8% |
| 10 | Italy | US$60.7m | 2.8% |
Binding rulings for similar goods 4
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N342165 U.S. CBP
The tariff classification of dicing blades from China.
- N317657 U.S. CBP
The tariff classification of abrasive sanding plates from China.
- H277235 U.S. CBP
Revocation of NY 876359; Tariff classification of diamond wire from Italy
- H284143 U.S. CBP
Request for classification of diamond circular saw blades
Recent rule changes mentioning this code
Acts whose text cites this code or its heading. Check the act itself: a code can be cited for reasons other than a change of its duty.
-
Suspension · Applies from: CELEX 32026R1463 · Source: eur-lex.europa.eu
- Other
Update to Commodity Code structure to maintain dynamic alignment with the EU – 30 June 2026
Trade Tariff news 6995 · Source: trade-tariff.service.gov.uk
In the UK Global Tariff, subheading 6804.21 covers 4 tariff lines and the duty is duty-free.
The EU Combined Nomenclature has one tariff line for subheading 6804.21; the duty is 1.7%.
Goods from 174 countries can enter the UK at a preferential rate instead of the standard Free; 174 of them pay no duty at all, for example under DCTS Comprehensive or European Union.
In the UK, additional duty of 35% applies on top of the customs duty to goods from Belarus and Russia.
In the 12 months to August 2026, the UK imported diamond grinding wheels worth £26.7m (down 1% on the year before), at an average of £20.86 per kg; China supplied 31%, followed by Italy.
World trade in diamond grinding wheels reached US$2.2bn in 2024, up 8.4% on 2023.
China was the largest exporter with 24.3% of the total, ahead of Japan.
Questions and answers
What is the HS code for of agglomerated synthetic or natural diamond?
Of agglomerated synthetic or natural diamond fall under HS subheading 6804.21, part of heading 6804, in section XIII of the Harmonized System.
What is the import duty on of agglomerated synthetic or natural diamond in the UK?
Under the UK Global Tariff, imports under 6804.21 from countries without a preferential agreement are free of duty. Preferential rates, anti-dumping duties and VAT are not included.
What is the import duty on of agglomerated synthetic or natural diamond in the EU?
Under the EU Combined Nomenclature, imports under 6804.21 from countries without a preferential agreement are charged at 1.7%. Preferential rates, anti-dumping duties and VAT are not included.
Which country exports the most of agglomerated synthetic or natural diamond?
China, with US$526.7m in 2024 (24.3% of world exports).
Which countries can export diamond grinding wheels to the UK duty-free?
174 countries pay no duty under a trade agreement or preference scheme, among them partners under DCTS Comprehensive, European Union, DCTS Enhanced. The goods must meet the agreement’s rules of origin and the importer needs proof of origin; otherwise the standard rate of Free applies. Pick a country above to see its rate.
Is there anti-dumping duty on diamond grinding wheels?
The UK charges additional duty of 35% on goods from Belarus and Russia. Lower rates apply to the named exporters listed in the measure.
Where does the UK import diamond grinding wheels from?
In the 12 months to August 2026, the largest suppliers were China (31%), Italy (12%) and South Korea (11%), out of total imports of £26.7m.