Fireclay Gunning Mix Refractory
A pneumatic-applied fireclay refractory mix for repairing furnace hot spots via guniting. Falls under HTS 3816.00.20.10 as clay-based refractory concrete for spray application in steel plants.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If hydraulic-set castable type
Castable refractories with hydraulic binders are distinct from clay ramming/gunning mixes.
If pre-formed gunning patches
Shaped refractory pieces, even for repairs, classify under 6902/6903.
If plain fire clay powder
Powdered fire clay lacks mix/binder elements of 3816 compositions.
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Import Tips & Compliance
• Include gunning velocity and bond strength test data to validate refractory performance
• Separate from castables (3816.00.50) by proving dry clay powder form
• Avoid bulk clay confusion; ship with application instructions for guniting
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