Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801
3 declarable lines
Heading 3816 covers refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, but not products of heading 3801. The declarable lines split dolomite ramming mix from other compositions. Other compositions are split into clay and other.
Products in this heading
- Dolomite ramming mix
- Clay-based refractory mortar
- Non-clay refractory mortar
- Refractory castable concrete mix
- Refractory gunning mix
- Refractory patching cement
- Refractory furnace lining concrete
How to choose the right subheading
- Confirm the product is a refractory cement, mortar, concrete or similar composition, not a shaped refractory ceramic article.
- Check whether the product is dolomite ramming mix; if yes, use 3816.00.10.00.
- If it is not dolomite mix, check whether the composition is clay based; clay-based products use 3816.00.20.10.
- Use 3816.00.20.50 for other non-dolomite, non-clay refractory cement, mortar or concrete compositions.
- Confirm the product is not an article of heading 3801 before classifying in heading 3816.
Often confused with
- Heading 6902Refractory ceramic bricks
Shaped fired refractory goods are ceramic constructional goods, not cement or mortar compositions.
- Heading 2523Ordinary Portland cement
General construction cement is classified as cement, not as a refractory composition.
- Heading 3801Artificial graphite pastes or blocks
Heading 3816 expressly excludes products of heading 3801.
- Heading 3824Prepared binders for foundry molds or cores
Foundry mold binders are classified in heading 3824, not as refractory cement.
Frequently asked questions
What is the HTS code for dolomite ramming mix?
Use 3816.00.10.00; the general (MFN) rate is Free.
What is the duty on clay-based refractory mortar?
The general (MFN) rate for 3816.00.20.10 is 3%.
How do I classify refractory concrete that is not dolomite and not clay-based?
Classify it in 3816.00.20.50; the general (MFN) rate is 3%.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.