HS Code 6903
Industrial Ceramic Labware and Tools
HS code 6903 is for industrial ceramic goods like crucibles, retorts, and nozzles designed for high-heat chemical or metallurgical processing environments.
4-digit Section XIIILCL
HS Code 6903 — Industrial Ceramic Labware and Tools
This category includes heavy-duty ceramic equipment like crucibles and tubes used in metal smelting and chemical processing. These items are specifically designed for chemical resistance and thermal stability under pressure.
What's included
- Graphite-based crucibles
- Alumina ceramic tubes
- Ceramic nozzles for continuous casting
- Thermocouple sheaths
What's excluded
- Ceramic labware for general use → use
6909(6903 focuses on metallurgical and industrial process equipment rather than general laboratory analysis.)
Common examples
- Graphite-clay crucible for melting gold
- Zirconia ceramic nozzles for steel manufacturing
- Ceramic immersion tubes
- Refractory ceramic muffles
Frequently asked questions
Are graphite crucibles under 6903?
Yes, if they contain refractory ceramic components, they are typically classified under 6903.10.
Trade & shipping notes
- Typical duty range: 0% - 5%
- Documentation: Technical data sheets showing carbon content or alumina purity are required for specific 6-digit classification.
- Typical shipping mode: LCL
- Top exporters: Germany, Japan, China
- Top importers: United States, Mexico, Germany
Related HS codes
Key takeaway
6903 covers ceramic 'tools' and 'vessels' for intense industrial heat processes, distinct from structural bricks.
Related HS codes
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