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3816.00.20/Insulating Refractory Castable/Canada

Insulating Refractory Castable from Canada

Lightweight castable with ceramic fiber and vermiculite for low thermal conductivity furnace backings. Under HTS 3816.00.20 as other refractory concretes, used behind dense linings in heat processing. Balances insulation and strength.

Duty Rate — Canada → United States

13%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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Import Tips

• Specify density (<1.5 g/cm³) and K-factor to prove insulating refractory nature

• Fiber content requires OSHA MSDS; watch for asbestos misdeclaration

Insulating Refractory Castable from Canada — Import Duty Rate | HTS 3816.00.20