ISIC 2391—Manufacture of refractory products

Where 2391 sits

1. C Manufacturing
2. 23 Manufacture of other non-metallic mineral products
3. 239 Manufacture of non-metallic mineral products n.e.c.
4. 2391 Manufacture of refractory products

What 2391 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.
• Manufacture of refractory articles containing magnesium oxide, calcium magnesium oxide or chromite

2391 in other systems