International Standard Industrial Classification of All Economic Activities, Rev.4Nigeria Standard Industrial Classification (ISIC Rev 4 based)
ISIC Rev 4 2391 to ISIC Rev 4 (Nigeria)
Crosswalk mapping from ISIC Rev 4 2391 "Manufacture of refractory products" to ISIC Rev 4 (Nigeria). 1 official equivalence.
ISIC Rev 4 2391 in ISIC Rev 4 (Nigeria)
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About ISIC Rev 4 2391
2391 Manufacture of refractory productsThis class includes the manufacture of intermediate products from mined or quarried non-metallic minerals, such as sand, gravel, stone or clay. This class includes: - manufacture of refractory mortars, concretes etc. - manufacture of refractory ceramic goods: • heat-insulating ceramic goods of siliceous fossil meals • refractory bricks, blocks and tiles etc. • retorts, crucibles, muffles, nozzles, tubes, pipes etc.