Code 6903 10 · Heading 6903

Refractory ceramic goods containing > 50% by weight graphite or other carbon

This code covers refractory ceramic retorts, crucibles, muffle furnaces, nozzles, plugs, tubes, rods and other similar goods, except refractory bricks, blocks, tiles and similar construction material. The goods must contain > 50% by weight graphite or other carbon, or a mixture of these products.

For example

A refractory ceramic crucible containing > 50% by weight graphite
A refractory ceramic retort containing > 50% by weight other carbon

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See the official tariff text

Official tariff text

Retorts, crucibles, mufflers, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods, slide gates and other refractory ceramic goods, containing by weight > 50% free carbon (excl. refractory bricks, blocks, tiles and similar refractory ceramic constructional goods)

The path to this code

Every code is reached through these choices, one level at a time.

Step 4 of 4

Step 1 · Section XIII Articles of stone, plaster, cement, asbestos, mica …
Is the item made of stone, plaster, cement, asbestos, mica or a similar material; is it a ceramic product; or is it glass or glassware?
✓
Step 2 · Chapter 69 Ceramic products 2 of 3 chapters in section XIII
What kind of ceramic product is it: a silica-earth product; refractory building material; other refractory ware; brick or similar building material; roofing or other architectural building product; pipe, gutter or pipe fitting; paving, flooring or wall-covering stone or tile; laboratory, technical or agricultural container; sanitary ware; porcelain tableware or household or toilet article; non-porcelain ceramic tableware or household or toilet article; statuette or other ornament; or another ceramic product?
✓
Step 3 · Heading 6903 Retorts, crucibles, mufflers, nozzles, plugs, suppo… 3 of 13 headings under chapter 69
Which material description applies: does the product contain > 50 weight% graphite or other carbon, or a mixture of these products; contain > 50 weight% aluminium oxide “Al2O3”, or be a mixture or compound of aluminium oxide and silica “SiO2”; or none of these?
✓
Step 4 · Subheading 6903 10 Retorts, crucibles, mufflers, nozzles, plugs, suppo… 1 of 3 subheadings under heading 6903
Does the refractory ceramic good contain > 50% by weight graphite or other carbon, or a mixture of these products; > 50% by weight aluminium oxide (Al2O3), or a mixture or compound of aluminium oxide and silica (SiO2); or none of these?

Full 8-digit codes

Pick the description that best matches your product.

1 code below this one

6903 10 00 Retorts, crucibles, mufflers, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods, slide gates and other refractory ceramic goods, containing by weight > 50% free carbon (excl. refractory bricks, blocks, tiles and similar refractory ceramic constructional goods) 5.0% Save

Compare the sibling codes

6903 10 Retorts, crucibles, mufflers, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods, slide gates and other refractory ceramic goods, containing by weight > 50% free carbon (excl. refractory bricks, blocks, tiles and similar refractory ceramic constructional goods) you are here 5.0%
6903 20 Retorts, crucibles, mufflers, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and other refractory ceramic goods, containing > 50% alumina, or a compound of alumina and silica (excl. refractory bricks, blocks, tiles and similar refractory ceramic constructional goods) 5.0%
6903 90 Retorts, crucibles, mufflers, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods, slide gates and other refractory ceramic goods (excl. those of siliceous fossil meals or similar siliceous earths, those of heading 6902, containing > 50% by weight of free carbon or containing > 50% by weight of alumina [Al203] or a mixture or compound of alumina and silica [SiO2]) 5.0%

Export to Norway

What Norwegian customs charges when goods like these are imported into Norway.

69.03.1000

Containing by weight more than 50 % of free carbon

Ordinary duty

Duty free

Goods of EU origin

Duty free You need documentation of EU origin to use this rate.

Norwegian tariff data version 1.5/1.2, last checked Aug. 3, 2026.

Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.

Export to the United Kingdom

What UK customs charges when goods like these are imported into the UK.

6903 10 00 00

Containing, by weight, more than 50 % of free carbon

Ordinary duty

4.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.

These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.

UK tariff data version v4.0.1576, last checked Aug. 3, 2026.

Contains public sector information licensed under the Open Government Licence v3.0.

Source: UK Department for Business and Trade (data.api.trade.gov.uk).

Check the neighbouring codes

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Retorts, crucibles, mufflers, nozzles, plugs, supports, cupels, tubes…

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