International Standard Industrial Classification of All Economic Activities, Rev.4North American Industry Classification System 2022
ISIC Rev 4 2391 to NAICS 2022
Crosswalk mapping from ISIC Rev 4 2391 "Manufacture of refractory products" to NAICS 2022. 1 official equivalence.
ISIC Rev 4 2391 in NAICS 2022
Each entry is an official equivalence edge. Click to see the full NAICS 2022 definition, hierarchy, and its own crosswalks.
Reverse direction: NAICS 2022 to ISIC Rev 4
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.