37320LeafLevel 5
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous earths
**Includes:** This subclass is defined through the following headings/subheadings of the HS 2012: 6902.
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/api/v1/systems/cpc_v21/nodes/37320Cross-system equivalences4
HS 2022
690210Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight, singly or together, more than 50% of the elements Mg, Ca or Cr, expressed as MgO, CaO or Cr2o3partial690220Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; containing by weight more than 50% of alumina (Al2o3), of silica (SiO2) or of a mixture or compound of thesepartial690290Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods; n.e.c. in item no. 6902.1 or 6902.2partial