HS code · 6-digit subheading
HS Code 8428.31 – Elevators and conveyors; continuous-action, for goods and materials, specially designed for underground use, n.e.c. in item no. 8428.20
HS code 8428.31 is the 6-digit subheading for elevators and conveyors, continuous-action, for goods and materials, specially designed for underground use, n.e.c. in item no. 8428.20. It is used for underground belt conveyor, mine conveyor system, tunnel conveyor, continuous haulage system and chain conveyor (underground).
What HS 8428.31 covers
This specific HS code covers continuous-action elevators and conveyors designed for goods and materials, specially engineered for underground use. This category is crucial for the mining and tunneling industries, where efficient and continuous transport of excavated materials, ore, or supplies within subterranean networks is essential. These robust systems are built to withstand harsh underground conditions, ensuring high throughput and operational safety. International trade involves heavy industrial equipment manufacturers specializing in mining solutions exporting to mining companies and tunneling contractors worldwide. Key trade considerations include durability, capacity, safety features for hazardous environments, and integration with other underground machinery. Their deployment is vital for the productivity and safety of underground operations.
- Covers
- Underground belt conveyor
- Mine conveyor system
- Tunnel conveyor
- Continuous haulage system
- Chain conveyor (underground)
- Apron feeder (underground)
- Vibrating conveyor (underground)
- Examples
- Joy Global (Komatsu) underground conveyors
- Sandvik underground conveying systems
- ThyssenKrupp Industrial Solutions mining conveyors
- Metso Outotec underground conveyors
Codes often confused with 8428.31
Common mistake. Often confused with general continuous-action conveyors (842839) if the 'underground use' specificity is overlooked, or with other mining machinery (Chapter 84 generally).
Top exporters and importers of HS code 842831, 2025
In 2025, the largest exporter of HS code 842831 in UN Comtrade data was China, with 43% of world exports; the largest importer in UN Comtrade data was France, with 15% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 China $39M 43% of world exports
- 2 Switzerland $22M 24% of world exports
- 3 Poland $6.4M 7.1% of world exports
World total: $90M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 France $14M 15% of world imports
- 2 Türkiye $7.7M 8.5% of world imports
- 3 United States $7.3M 8.0% of world imports
World total: $91M 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 that did not report are estimated from what other countries recorded trading with them. 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 code for 8428.31
Brazil does not split HS 8428.31: its NCM code is 8428.31.00.
All Brazil NCM codes in heading 84.28 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 8428.31
What is HS code 842831?
HS code 842831 is a 6-digit subheading in the Harmonized System that covers: Elevators and conveyors; continuous-action, for goods and materials, specially designed for underground use, n.e.c. in item no. 8428.20. This specific HS code covers continuous-action elevators and conveyors designed for goods and materials, specially engineered for underground use. This category is crucial for the mining and tunneling industries, where efficient and continuous transport of excavated materials, ore, or supplies within subterranean networks is essential. These robust systems are built to withstand harsh underground conditions, ensuring high throughput and operational safety. International trade involves heavy industrial equipment manufacturers specializing in mining solutions exporting to mining companies and tunneling contractors worldwide. Key trade considerations include durability, capacity, safety features for hazardous environments, and integration with other underground machinery. Their deployment is vital for the productivity and safety of underground operations.
What products fall under HS code 842831?
Underground belt conveyor, mine conveyor system, tunnel conveyor, continuous haulage system, chain conveyor (underground), apron feeder (underground), vibrating conveyor (underground)
What are common misclassifications for HS code 842831?
Often confused with general continuous-action conveyors (842839) if the 'underground use' specificity is overlooked, or with other mining machinery (Chapter 84 generally).
Which countries are the top exporters of goods under HS code 842831?
In 2025, the top exporters of HS code 842831 in UN Comtrade data were China ($39M, 43% of world exports), Switzerland ($22M) and Poland ($6.4M). World exports came to about $90M, 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 goods under HS code 842831?
In 2025, the top importers of HS code 842831 in UN Comtrade data were France ($14M, 15% of world imports), Türkiye ($7.7M) and the United States ($7.3M). World imports came to about $91M, 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.
How is HS code 842831 structured?
HS code 842831 is a 6-digit subheading under the Harmonized System. The first 2 digits (84) identify the chapter, digits 3-4 (28) identify the heading, and digits 5-6 (31) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 842831?
In Brazil, HS code 842831 is NCM 8428.31.00. The last two digits are 00 because Brazil does not split this HS code further.