TOL 2025 23200 → ekvivalents NACE-BEL 2025 (Belgium)

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23.20

Manufacture of refractory products

This class includes: - manufacture of intermediate products from mined or quarried non-metallic minerals (e.g. gravel, stone or clay) - manufacture of refractory mortars, concretes, etc. - manufacture of refractory ceramic goods, e.g.: • heat-insulating ceramic goods of siliceous fossil meals • refractory bricks, blocks and tiles, etc. • retorts, crucibles, muffles, nozzles, tubes, pipes, etc. This class also includes: - manufacture of refractory articles containing magnesium oxide, calcium magnesium oxide or chromite