HS Code 251720

HS code 251720 is the World Customs Organization 6-digit HS 2022 subheading for "Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling or for railway or other ballast, shingle and flint, whether or not heattreated; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heattreated : Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 251710". The first two digits (25) are the chapter — Salt; sulphur; earths and stone; plastering materials, lime and cement — and digits 3-4 (2517) are the heading. Countries add further digits (8-10) for their national tariff line.

Common products classified under 251720 include slag macadam, slag gravel, industrial waste aggregate and similar items matching macadam of slag. The correct code still depends on the product's material, function and intended use.

Duty is set by the destination country, not by the 6-digit HS code alone. Start from the official tariff of your market — USITC HTS (US), TARIC / Access2Markets (EU), GOV.UK Trade Tariff (UK), CBSA (Canada), ABF (Australia) or Singapore Customs — and look up the full national code with China as the country of origin.

The first 6 digits (251720) are the same worldwide under the WCO Harmonized System. Beyond that, each country extends the code (HTS in the US, TARIC in the EU, etc.) and sets its own duty and tax rates.

Treat a supplier-provided code as a clue, not a final classification. It can be incomplete, China-export-specific, or mismatched to your destination's rules. Verify against the official tariff and your product's actual material and use.