High-Purity Alumina Ceramic Rod for Kilns
99.5% alumina ceramic rod used as support in high-temperature kilns and sintering furnaces. Fired refractory goods designed for structural support under extreme thermal conditions, HTS 6903.20.00.00.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made from siliceous fossil meals or earths
Silica-based refractories have dedicated classification separate from alumina goods.
If not meeting refractory firing requirements
Non-refractory (>800°C firing) ceramics excluded from Chapter 69 per notes.
If imported as furnace/oven parts
Complete industrial furnace parts classified functionally rather than by material.
Not sure which classification is right?
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Import Tips & Compliance
• Include kiln temperature rating (>1600°C) and material safety data sheets
• Distinguish from unfinished ceramic rods by providing firing process documentation
• Use separate invoices for rods vs. complete kiln assemblies
Related Products under HTS 6903.20.00.00
Alumina Crucible for Laboratory Use
High-purity alumina crucible designed for melting and holding metals or chemicals in laboratory furnaces, containing over 90% Al2O3 by weight. Fired after shaping at high temperatures exceeding 800°C, it qualifies as a refractory ceramic good under HTS 6903.20.00.00 due to its alumina content and use in high-temperature processes.
High-Alumina Ceramic Nozzle for Continuous Casting
Refractory nozzle made from alumina-silica mixture (>70% Al2O3) used in steel continuous casting to control molten metal flow. Fired ceramic construction withstands extreme temperatures, classified under HTS 6903.20.00.00 as other refractory ceramic goods.
Alumina Thermocouple Protection Tube
Fired alumina ceramic tube (99% Al2O3) protecting thermocouples in high-temperature furnaces and kilns. Essential refractory component for temperature measurement in industrial processes, falling under HTS 6903.20.00.00.
Refractory Alumina Slide Gate Plate
High-alumina (85% Al2O3) ceramic plate used in steel ladle slide gate systems to control molten steel flow. Precision-fired refractory component essential for steelmaking, classified under HTS 6903.20.00.00.
Alumina Ceramic Retort for Chemical Processing
Fired alumina retort (>80% Al2O3) used for high-temperature chemical reactions and distillation. Refractory vessel withstands corrosive environments and thermal shock, classified HTS 6903.20.00.00.
Alumina-Silica Kiln Furniture Shelf
Refractory shelf made from 60% alumina-40% silica mixture for supporting ware in ceramic kilns. High-temperature fired ceramic designed for repeated thermal cycling, HTS 6903.20.00.00 classification.