Other
Refractory bricks and shapes, magnesia, calcia, or chrome-based
HSN 6902 10 90 (other refractory bricks, blocks, tiles, and similar goods containing more than 50% Mg, Ca, or Cr by weight) is not covered by a Bureau of Indian Standards Quality Control Order and carries no Partner Government Agency clearance requirement at the tariff-line level. Import follows the standard customs procedure: Importer-Exporter Code (IEC), bill of entry, commercial invoice, packing list. Other refractory ceramic goods within Chapter 69 — particularly those defined by siliceous composition or by more specific elemental thresholds — may fall under sibling tariff lines that attract distinct compliance obligations.
The primary risk at this tariff line is misclassification: refractory goods are differentiated by chemical composition, and a customs re-examination that establishes a different elemental majority — or places the goods in a more specific subheading — triggers retrospective compliance and potential detention. Importers should hold laboratory certificates of composition at the time of filing to defend the declared classification. Chapter 69 contains multiple subheadings for refractory ceramics, and the boundary between them turns on precise weight percentages of MgO, CaO, and Cr₂O₃.