</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →
3816.00.20.50/Insulating Refractory Castable/Canada

Insulating Refractory Castable from Canada

Lightweight castable refractory with vermiculite and alumina for low thermal conductivity furnace backings. Under HTS 3816.00.20.50 as other refractory concretes, serviceable to 1400°C with density <1.2 g/cm³. Reduces energy loss in heat processing equipment.

Duty Rate — Canada → United States

13%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Calculate with your customs valueVerify classification with AI

Import Tips

• Thermal conductivity (<0.3 W/mK) data essential for insulating claim

• Vermiculite expansion certs prevent asbestos contamination flags

Insulating Refractory Castable from Canada — Import Duty Rate | HTS 3816.00.20.50