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
Equivalents
EVRK 2.1 red.23.20Ugniai atsparių gaminių gamybaIn force
EVRK 2.1 red.23.20.00Ugniai atsparių gaminių gamybaIn force
PKD 202523.20Produkcja wyrobów ogniotrwałychIn force
PKD 202523.20.ZProdukcja wyrobów ogniotrwałychIn force
Compare across systems
See how 23.20 maps to other classification systems side by side — names, scope and differences.