Insulating Refractory Castable from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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