6902.90.10/Low Porosity Fireclay Bricks/Japan

Low Porosity Fireclay Bricks from Japan

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 — 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

• Apparent porosity <18% certification required

• Cold crushing strength documentation (>300 kg/cm²)

• Specify reheat linear change test results