HS Code 3816
Refractory Cements and Mortars
HS code 3816 covers refractory cements, mortars, and concretes used for lining high-temperature industrial equipment, but excludes graphite-based products.
HS Code 3816 — Refractory Cements and Mortars
These are heat-resistant building materials used in extreme high-temperature environments like furnaces and kilns. The category includes specialised concretes and mortars designed to maintain structural integrity under thermal stress.
What's included
- Refractory bonding mortars
- High-alumina ramming mixes
- Dolomite ramming mix
- Hydraulic refractory concrete
What's excluded
- Retort carbon → use
2704(Carbon products are classified in Chapter 27.) - Graphite based mixes → use
3801(Preparations based on graphite or other carbon are specially provided for in 3801.)
Common examples
- Blast furnace taphole clay
- Refractory castables
- Gunite refractory mixtures
- Magnesite-based ramming mass
Frequently asked questions
Is standard construction cement included here?
No, standard hydraulic cements are classified under heading 2523. Heading 3816 is specifically for refractory (heat-resistant) compositions.
Trade & shipping notes
- Typical duty range: 0% - 5%
- Documentation: Often subject to anti-dumping duties when originating from specific Asian markets.
- Typical shipping mode: FCL
- Top exporters: China, Germany, Austria, India
- Top importers: United States, Russia, Germany, Indonesia
Related HS codes
Key takeaway
Essential for heavy industry; check for anti-dumping duties before importing.
Related HS codes
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