232000 Manufacture of refractory products
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232000 Manufacture of refractory products
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This type 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 type also includes:
- manufacture of refractory articles containing magnesium oxide, calcium magnesium oxide or chromite