Product classification

HS code for Stone grinder: 8464.20

Machine-tools, grinding or polishing machines, for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass.

Classification of stone grinder under HS 8464.20

Stone grinders are classified under HS code 846420, which pertains to machine-tools for working stone, ceramics, concrete, asbestos-cement, or similar mineral materials. Unlike bulk processing equipment, these machines are designed to work on a specific workpiece to achieve a desired surface finish or geometric precision. Subheading 846420 specifically identifies grinding or polishing machines. These tools are typically used in the final stages of production for items like marble countertops, granite tiles, or decorative stone elements. The classification under heading 8464 is appropriate because the equipment functions as a machine-tool, which generally implies a stationary machine used for shaping or surface-working hard materials. The distinction between 8464 and 8474 is based on the nature of the work performed. While 8474 machines are for crushing raw minerals into smaller particles, 8464 machines are for working the material, such as smoothing a surface or sharpening an edge. This classification also excludes hand-held tools, which are covered under heading 8467. For a machine to fall under 8464, it must be designed to be mounted on a pedestal, a bench, or the floor. Proper classification ensures that the correct duty rates are applied to finishing equipment versus raw material processing machinery.

Covers
  • Marble surface grinding machines
  • Granite edge polishing machines
  • Stationary floor grinders for concrete
  • Bench-top stone grinders
  • Automatic stone slab polishing lines
Also under 8464.20
  • Comandulli edge polishers
  • Achilli grinding machines
  • HTC floor grinders
  • Bavelloni glass processing machines
  • Lissmac surface grinders

Codes often confused with 8464.20

Common mistake. The most common misclassification occurs with HS code 847420. While both headings mention grinding, 8474 is for mineral processing (bulk reduction), whereas 8464 is for machine-tools (finishing). Another common error is using 846729 for hand-held angle grinders; heading 8464 is strictly for machines that are not held in the hand during operation.

8474.20Machines; for crushing or grinding earth, stone, ores or other mineral substances84.74Machinery for sorting, screening, separating, washing, crushing, grinding, mixing or kneading earth, stone, ores in solid form, shaping, moulding machinery for solid mineral fuels84.64Machine-tools; for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass8467.29Tools; for working in the hand, with self-contained electric motor; other than saws and drills

Top exporters and importers of HS 846420 (the code used for stone grinder), 2025

In 2025, the largest exporter of HS 846420 (the code used for stone grinder) in UN Comtrade data was China, with 30% of world exports; the largest importer in UN Comtrade data was China, with 17% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Figures cover everything classified under HS 846420, not only stone grinder.

Top exporters 2025 · share of world exports

  1. 1 China $291M
  2. 2 Italy $210M
  3. 3 Germany $106M

World total: $959M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 China $156M
  2. 2 United States $91M
  3. 3 Vietnam* ~$60M

World total: $928M Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM codes for stone grinder

Brazil splits HS 8464.20 into 4 NCM codes. Pick the one that matches your product:

  • 8464.20.10Glass grinding or polishing machines
  • 8464.20.21Ceramic tile polishers, eight or more heads
  • 8464.20.29Other ceramic grinding or polishing machines
  • 8464.20.90Stone or concrete grinding or polishing machines

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about stone grinder

What is the HS code for Stone grinder?

The HS code for Stone grinder is 846420 (Machine-tools; grinding or polishing machines, for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass). The HS code for a stationary stone grinder or polishing machine is 846420.

How do I classify Stone grinder for customs?

Stone grinder is classified under HS code 846420 — Machine-tools; grinding or polishing machines, for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass. This is a 6-digit subheading level code.

Are hand-held angle grinders included in 846420?

No, hand-held power tools for grinding stone are classified under heading 8467, specifically 846729 if they are electric.

Which countries are the top exporters of stone grinder (HS 846420)?

In 2025, the top exporters of HS 846420 (the code used for stone grinder) in UN Comtrade data were China ($291M, 30% of world exports), Italy ($210M) and Germany ($106M). World exports came to about $959M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of stone grinder (HS 846420)?

In 2025, the top importers of HS 846420 (the code used for stone grinder) in UN Comtrade data were China ($156M, 17% of world imports), the United States ($91M) and Vietnam (about $60M). World imports came to about $928M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Is the HS code for Stone grinder the same in all countries?

The base HS code 846420 for Stone grinder is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.

What is the NCM code for stone grinder in Brazil?

Brazil splits HS 846420 into 4 NCM codes, so the right one for stone grinder depends on the product's details: 8464.20.10 (Glass grinding or polishing machines), 8464.20.21 (Ceramic tile polishers, eight or more heads), 8464.20.29 (Other ceramic grinding or polishing machines), 8464.20.90 (Stone or concrete grinding or polishing machines).