Bricks
087895 · 1990-12-13 — Refractory products; Cruciform checkers; Firebricks; Furnace lining; Arch blocks; Stack blocks; QT refractory tiles; alumina; silica; silicon carbide
This is in reference to your request, in behalf of Corhart Refractories Corporation, for classification of certain refractory products of France under the Harmonized Tariff Schedule of the United States (HTSUS). FACTS: The refractory products listed were: Cruciform Checkers - firebricks of various shapes and sizes used to line regenerator chambers of furnaces. They are said to be comprised of a mixture of alumina and silica that exceeds 50 percent by weight. Arch Blocks (ER1681 SI N/RN) - refractory articles used in glass furnace superstructure, with 50.2 to 50.6 percent by weight alumina and…
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