3816.00.20.50/Insulating Refractory Castable/Japan

Insulating Refractory Castable from Japan

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 — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

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

• Vermiculite expansion certs prevent asbestos contamination flags