HS code · 6-digit subheading
HS Code 6810.91 – Cement, concrete or artificial stone; prefabricated structural components for building or civil engineering, whether or not reinforced
HS code 6810.91 is the 6-digit subheading for cement, concrete or artificial stone, prefabricated structural components for building or civil engineering, whether or not reinforced. It is used for precast concrete beams, bridge segments, tunnel linings, precast wall panels and floor slabs.
What HS 6810.91 covers
This HS code covers prefabricated structural components made from cement, concrete, or artificial stone, designed for use in building or civil engineering projects, whether reinforced or not. These are large, often custom-engineered elements manufactured off-site and then transported for assembly, offering significant advantages in terms of construction speed, quality control, and reduced on-site labor. Products under this code are vital for major infrastructure developments like bridges, tunnels, high-rise buildings, and large industrial facilities. International trade involves specialized logistics due to the size and weight of these components, often requiring heavy-lift transport and careful planning. Exporters are typically countries with advanced manufacturing technology and engineering expertise, while importers are nations undertaking large-scale public works or commercial developments. The market is driven by government spending on infrastructure, urban development projects, and the increasing adoption of modular construction techniques for efficiency and sustainability.
- Covers
- Precast concrete beams
- Bridge segments
- Tunnel linings
- Precast wall panels
- Floor slabs
- Culverts
- Utility vaults
- Stadium seating units
- Examples
- LafargeHolcim (precast solutions)
- Skanska (prefabricated elements)
- Tindall Corporation (precast concrete)
- Oldcastle Infrastructure (precast utility products)
Codes often confused with 6810.91
Common mistake. Can be confused with 681011 (building blocks) if the components are smaller and modular, or 681099 (other articles) if they are not primarily structural and load-bearing elements.
Top exporters and importers of HS code 681091, 2025
In 2025, the largest exporter of HS code 681091 in UN Comtrade data was Malaysia, with 17% of world exports; the largest importer in UN Comtrade data was Singapore, with 21% 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 Malaysia $561M 17% of world exports
- 2 Germany $484M 15% of world exports
- 3 China $342M 10% of world exports
World total: $3.3B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Singapore $647M 21% of world imports
- 2 Germany $276M 8.9% of world imports
- 3 Netherlands $264M 8.5% of world imports
World total: $3.1B 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 6810.91
Brazil does not split HS 6810.91: its NCM code is 6810.91.00.
All Brazil NCM codes in heading 68.10 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 6810.91
What is HS code 681091?
HS code 681091 is a 6-digit subheading in the Harmonized System that covers: Cement, concrete or artificial stone; prefabricated structural components for building or civil engineering, whether or not reinforced. This HS code covers prefabricated structural components made from cement, concrete, or artificial stone, designed for use in building or civil engineering projects, whether reinforced or not. These are large, often custom-engineered elements manufactured off-site and then transported for assembly, offering significant advantages in terms of construction speed, quality control, and reduced on-site labor. Products under this code are vital for major infrastructure developments like bridges, tunnels, high-rise buildings, and large industrial facilities. International trade involves specialized logistics due to the size and weight of these components, often requiring heavy-lift transport and careful planning. Exporters are typically countries with advanced manufacturing technology and engineering expertise, while importers are nations undertaking large-scale public works or commercial developments. The market is driven by government spending on infrastructure, urban development projects, and the increasing adoption of modular construction techniques for efficiency and sustainability.
What products fall under HS code 681091?
Precast concrete beams, bridge segments, tunnel linings, precast wall panels, floor slabs, culverts, utility vaults, stadium seating units
What are common misclassifications for HS code 681091?
Can be confused with 681011 (building blocks) if the components are smaller and modular, or 681099 (other articles) if they are not primarily structural and load-bearing elements.
Which countries are the top exporters of goods under HS code 681091?
In 2025, the top exporters of HS code 681091 in UN Comtrade data were Malaysia ($561M, 17% of world exports), Germany ($484M) and China ($342M). World exports came to about $3.3B, 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 681091?
In 2025, the top importers of HS code 681091 in UN Comtrade data were Singapore ($647M, 21% of world imports), Germany ($276M) and the Netherlands ($264M). World imports came to about $3.1B, 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 681091 structured?
HS code 681091 is a 6-digit subheading under the Harmonized System. The first 2 digits (68) identify the chapter, digits 3-4 (10) identify the heading, and digits 5-6 (91) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 681091?
In Brazil, HS code 681091 is NCM 6810.91.00. The last two digits are 00 because Brazil does not split this HS code further.