Low Porosity Fireclay Bricks from Germany
Low porosity fireclay refractory bricks minimize slag penetration in blast furnace stove checkers through dense vitrified structure from high firing. Balance insulation with strength. Standard classification HTS 6902.90.10.
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
• Apparent porosity <18% certification required
• Cold crushing strength documentation (>300 kg/cm²)
• Specify reheat linear change test results