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6903.90.00.50/Ceramic Retort Tube/Japan

Ceramic Retort Tube from Japan

Fired mullite ceramic retort tube for gas purification processes at elevated temperatures. Specifically listed under HTS 6903.90.00.50 as refractory ceramic goods for chemical reactions.

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

• Document end-use in chemical processing; provide mullite phase analysis; avoid electrical fitting classification by function emphasis

Ceramic Retort Tube from Japan — Import Duty Rate | HTS 6903.90.00.50