Chapter 2517 — Customs Tariff Headings

2517.20.00Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.10

2517.30.00Tarred macadam

2517.4Granules, chippings and powder, of stones of heading 25.15 or 25.16, whether or not heat-treated:

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Products classified under Tariff item 25.17

1 Inch Clean Concrete Wash Gravel

Washed 1 inch gravel free of fines, used in concrete washout pits and drainage applications. Prevents clogging in precast concrete production and classifies under tariff item 2517.10.00 as clean concrete aggregate gravel.

3/4 Inch Crushed Limestone Gravel

Angular crushed limestone gravel sized 3/4 inch, ideal for road base and concrete mixing. Provides excellent compaction for driveways and parking lots, and is classified under tariff item 2517.10.00 for gravel used in concrete aggregates.

ASTM C33 #67 Coarse Concrete Gravel

Precisely graded 1/2 x 3/8 inch gravel meeting ASTM C33 Size #67 for concrete coarse aggregate. Essential for high-strength structural concrete production and classifies under tariff item 2517.10.00 as pebbles or gravel commonly used for concrete.

Basalt Concrete Aggregate

Crushed basalt stone aggregate with excellent compressive strength, sized for ready-mix concrete production. Its primary use as a concrete aggregate and road base material places it under tariff item 2517.10.00, which covers broken or crushed stone of a kind commonly used for these purposes.

Crushed Limestone Gravel

Crushed limestone gravel, typically sized 3/8 to 3/4 inch, used as concrete aggregate in construction projects. As broken or crushed stone specifically for concrete aggregates, it falls under tariff item 2517.10.00.

Crushed Marble Road Metal

Crushed marble chips used as road metalling material for rural roads and driveways, providing a white decorative surface course. Although marble originates from heading 2515, crushing for road use brings it under tariff item 2517.10.00 as broken or crushed stone for road metalling.

Gneiss Railway Ballast

Metamorphic gneiss crushed to AREMA #4 ballast specification for mainline railway track support. Provides excellent lateral stability under tariff item 2517.10.00, which explicitly includes broken or crushed stone for railway ballast.

Granite Road Base Aggregate

Crushed granite stone graded for use in road metalling and base layers under asphalt or concrete pavements. Classified in tariff item 2517.10.00 as broken or crushed stone designed for road construction.

Heat-Treated Flint Shingle

Heat-treated flint shingle, crushed and screened for use in concrete aggregates or road surfacing, providing silica-rich durability. Tariff item 2517.10.00 specifically lists shingle and flint suitable for construction aggregates.

Heat-Treated Pebbles Concrete Mix

Heat-treated decorative pebbles specifically sized and tested for exposed aggregate concrete finishes in architectural applications. Dual use as concrete aggregate qualifies under tariff item 2517.10.00, and the heat treatment removes iron stains.

Quartzite Crushed Road Aggregate

High-silica quartzite crushed to 1-2 inch size for road shoulder and base course construction. Exceptional hardness makes it ideal for heavy traffic roads under tariff item 2517.10.00, and heat-treated versions improve frost resistance.

Railway Ballast Crushed Stone

Hard crushed stone, typically basalt or granite sized 1.5-2.5 inches, used as railway ballast to support tracks and facilitate drainage. Meets tariff item 2517.10.00 criteria as broken stone for railway ballast applications.

River Pebbles for Concrete Aggregate

Smooth river pebbles graded 3/4 inch, washed and screened for use as coarse aggregate in concrete mixing. Falls under tariff item 2517.10.00 as pebbles commonly used for concrete aggregates despite natural rounded shape.

Traprock Concrete Coarse Aggregate

Dense traprock (diabase) crushed to 1-1/2 inch maximum size for structural concrete coarse aggregate. Superior bonding properties under tariff item 2517.10.00 for concrete aggregate use.

Washed Sea Shingle Ballast

Washed sea shingle consisting of rounded pebbles collected from coastal areas, sized for railway or crane mat ballast applications. Tariff item 2517.10.00 explicitly includes shingle for ballast uses, and the natural salt content is removed.

Aluminum Dross Road Chip Seal

Crushed aluminum dross macadam, sized for chip seal surface treatments on rural roads. This product is macadam of dross, a similar industrial waste, and is not processed beyond crushing or screening, consistent with Chapter 25 Note 1.

Blast Furnace Slag Aggregate

Crushed blast furnace slag macadam for concrete sub-base and drainage layers in road projects. This is macadam of slag, an industrial waste, and is not processed beyond crushing or screening, consistent with Chapter 25 Note 1.

Copper Smelter Dross Macadam

Macadam produced from copper smelter dross and slag, used in secondary road construction and parking lot bases. This product is macadam of dross or similar industrial waste, and is not processed beyond crushing or screening, consistent with Chapter 25 Note 1.

Foundry Sand-Slag Macadam Blend

Macadam blending spent foundry sand with steel slag for foundry yard paving and industrial hardstandings. This is macadam of slag or similar industrial waste, and is not processed beyond crushing or screening, consistent with Chapter 25 Note 1.

Incinerator Bottom Ash Macadam

Processed municipal solid waste incinerator bottom ash formed into road macadam for base courses. This is macadam of similar industrial waste, and is not processed beyond crushing or screening, consistent with Chapter 25 Note 1.

Phosphate Slag Construction Fill

Granular phosphate fertilizer production slag used as structural fill and pipe bedding in construction. This is macadam of similar industrial waste, and is not processed beyond crushing or screening, consistent with Chapter 25 Note 1.

Slag Macadam for Road Base

Crushed slag from steel production processed into macadam aggregate for road construction base layers. This is macadam of slag, an industrial waste, and is not processed beyond crushing or screening, consistent with Chapter 25 Note 1.

Steel Slag Road Ballast

Granular steel slag macadam designed for railway ballast and highway shoulders, incorporating dross fines. This is macadam of slag or dross, and is not processed beyond crushing or screening, consistent with Chapter 25 Note 1.

Tarred Slag Macadam Mix

Slag macadam incorporating tar binder for dust control in temporary road surfaces. This is tarred macadam of slag, and is not processed beyond crushing or screening, consistent with Chapter 25 Note 1.

Asphalt-Tarred Macadam for Road Surfacing

Asphalt-tarred macadam composed of crushed stone aggregates bound with hot asphalt tar, used for road base and surfacing layers. This product is explicitly named in tariff item 2517.30.00 as tarred macadam, and the asphalt tar binding qualifies as a tar treatment under the heading's scope.

Bitumen-Tarred Slag Macadam Mix

Bitumen-tarred slag macadam, a blend of slag, dross, and crushed stone bound with bitumen-tar for road metalling. Tariff item 2517.30.00 covers tarred macadam, including those incorporating industrial waste materials like slag, as specified in the heading's scope.

Coal Tar-Bound Macadam Aggregate

Coal tar-bound macadam aggregate, made from crushed granite coated with coal tar for road metalling and concrete aggregates. This product is classified under tariff item 2517.30.00 as tarred macadam, since the coal tar binding aligns with the heading's tar treatment and the granite aggregate is a common road metalling material.

Heat-Treated Tarred Gravel for Railway Ballast

Heat-treated tarred gravel and shingle, impregnated with tar for durability and used as railway ballast. Tariff item 2517.30.00 covers tarred macadam, and the heading explicitly includes heat-treated materials, making this product classifiable here.

Tarred Limestone Chippings for Road Base

Tarred limestone chippings and powder, derived from stone of heading 25.15, used for road base stabilization. Tariff item 2517.30.00 covers tarred macadam, and the heading explicitly includes granules, chippings, and powder of tarred stones, making this product classifiable here.

Crushed Marble Powder 100 Mesh

Crushed Marble Powder 100 Mesh is a fine powder derived from grinding marble of heading 25.16. It is used as a filler in paints, plastics, and pharmaceuticals. This product falls under tariff item 2517.41.00 as it is a powder of marble stone, not subjected to processes beyond crushing, grinding, or screening.

Decorative Marble Pebbles 20-40mm

Decorative Marble Pebbles 20-40mm are polished marble pebbles used for garden decoration and aquarium substrates. They are crushed and screened from marble of heading 25.15. Despite decorative packaging, they remain classified under tariff item 2517.41.00 as marble granules.

Heat-Treated Marble Chips 5-10mm

Heat-Treated Marble Chips 5-10mm are marble chips subjected to thermal processing for enhanced durability in road base and concrete. The heat treatment does not change the product's classification under heading 25.17, which explicitly includes heat-treated granules. This product falls under tariff item 2517.41.00 as heat-treated marble granules.

Marble Aggregate for Railway Ballast

Marble Aggregate for Railway Ballast is coarse crushed marble graded at 30-60mm for railway track stability. It meets engineering specifications for concrete aggregates and railway ballast. Tariff item 2517.41.00 explicitly covers granules, chippings and powder of marble, including those used for ballast.

Marble Chippings 3-6mm

Marble Chippings 3-6mm are granular marble stone aggregate produced by crushing and screening marble blocks from heading 25.15. They are used in concrete mixes, landscaping, and decorative pathways. This product falls under tariff item 2517.41.00 as marble chippings.

Marble Dust for Paint Filler

Marble Dust for Paint Filler is ultrafine marble dust (<325 mesh) used as an extender pigment in industrial paints and coatings. It is ground from marble stone of heading 25.16. Tariff item 2517.41.00 covers marble powder, and this product is not further processed beyond grinding.

Marble Gravel 10-20mm

Marble Gravel 10-20mm is rounded marble gravel pebbles used for decorative landscaping and water filtration systems. It is sourced from crushed marble complying with heading 25.15 specifications. This product falls under tariff item 2517.41.00 as marble granules.

Anorthosite Granules

Anorthosite granules are crushed from anorthosite, a rock of heading 25.16, and are used as fillers in construction and industrial applications. The granules are processed by crushing and sizing, which is permitted under Chapter 25 Note 1. They are not heat-treated or mixed, so they fall under this tariff item for granules of stones of heading 25.16.

Basalt Granules 4-8mm

Basalt granules, sized 4-8mm, are produced by crushing basalt rock of heading 25.16 and are used in railroad ballast, concrete additives, or filtration media. The crushing and sizing are mechanical processes allowed by Chapter 25 Note 1. They are not heat-treated or mixed, so they are classified as granules of stones of heading 25.16 under this tariff item.

Crushed Marble Granules

Crushed marble granules, sized 2-5mm, are derived from marble stone of heading 25.15 and are used in decorative concrete mixes and landscaping. The crushing process is a mechanical operation permitted under Chapter 25 Note 1. They are not heat-treated or mixed, so they are classified as granules of stones of heading 25.15 under this tariff item.

Gneiss Granules

Gneiss granules, sized 2-4mm, are produced by crushing gneiss metamorphic rock of heading 25.16 and are used in concrete countertops or garden mulch. The crushing and sizing are mechanical processes allowed by Chapter 25 Note 1. They are not heat-treated or mixed, so they are classified as granules of stones of heading 25.16 under this tariff item.

Granite Chippings 3-6mm

Granite chippings, sized 3-6mm, are crushed from granite stone of heading 25.16 and are used for pathway surfacing, railway ballast fines, or asphalt mixes. The chippings are produced by mechanical crushing and are not heat-treated or mixed, as permitted by Chapter 25 Note 1. They are classified as chippings of stones of heading 25.16 under this tariff item.

Limestone Powder Fines

Limestone powder fines, with particle size under 2mm, are derived from crushed limestone of heading 25.15 and are used in cement production, animal feed supplements, or soil amendment. The powder is obtained by mechanical grinding, which is permitted under Chapter 25 Note 1. It is not heat-treated or mixed, so it is classified as powder of stones of heading 25.15 under this tariff item.

Micaceous Granite Powder

Micaceous granite powder is produced by crushing granite of heading 25.16 and contains mica flakes, used in paints. The powder is obtained by mechanical grinding and is not heat-treated or mixed, as allowed by Chapter 25 Note 1. It is not pure mica, so it is classified as powder of stones of heading 25.16 under this tariff item.

Perthite Chippings

Perthite chippings are crushed from perthite, a feldspar rock of heading 25.16, and are used in specialty concrete applications. The chippings are produced by mechanical crushing and are not heat-treated or mixed, as permitted by Chapter 25 Note 1. They are classified as chippings of stones of heading 25.16 under this tariff item.

Porphyry Powder

Porphyry powder is ground from porphyry rock of heading 25.16 and is used in pigments. The powder is obtained by mechanical grinding and is not heat-treated or mixed, as allowed by Chapter 25 Note 1. It is classified as powder of stones of heading 25.16 under this tariff item.

Quartzite Chippings

Quartzite chippings, sized 5-10mm, are crushed from quartzite of heading 25.16 and are used for decorative gravel, terrazzo flooring aggregates, or water filtration. The chippings are produced by mechanical crushing and are not heat-treated or mixed, as permitted by Chapter 25 Note 1. They are classified as chippings of stones of heading 25.16 under this tariff item.

Sandstone Chippings

Sandstone chippings are crushed from sandstone of heading 25.16 and are used in hydraulic fracturing or roofing granules. The chippings are produced by mechanical crushing and are not heat-treated or mixed, as allowed by Chapter 25 Note 1. They are classified as chippings of stones of heading 25.16 under this tariff item.

Serpentine Chippings

Serpentine chippings are crushed from serpentine stone of heading 25.16 and are used for decorative purposes. The chippings are produced by mechanical crushing and are not heat-treated or mixed, as permitted by Chapter 25 Note 1. They are classified as chippings of stones of heading 25.16 under this tariff item.

Syenite Powder

Syenite powder is ground from syenite of heading 25.16 and is used in ceramics and glassmaking. The powder is obtained by mechanical grinding and is not heat-treated or mixed, as allowed by Chapter 25 Note 1. It is classified as powder of stones of heading 25.16 under this tariff item.