Class 2391 - Manufacture of refractory products

PSIC Class 2391 covers Manufacture of refractory products. Current child subclasses include Manufacture of Refractory Products. This four-digit layer is useful when comparing neighboring activities before landing on the...

Level Class

Hierarchy depth 4/5

Children 1

Last verified 2026-10-21

Key facts

Code summary

Code 2391

Official title Manufacture of refractory products

Version PSIC 2019

Source layer PSA / BSP

Parent 239 - Manufacture of non-metallic mineral products, n.e.c.

Section C - Manufacturing

Next step

Child codes

These are the next codes most users should open after this hub page.

23910

Manufacture of Refractory Products

Nearby codes

2392

Manufacture of clay building materials

2393

Manufacture of other porcelain and ceramic products

2394

Manufacture of cement

2395

Manufacture of lime and plaster

2396

Manufacture of articles of concrete, cement and plaster

2397

Cutting, shaping and finishing of stone

2399

Manufacture of other non-metallic mineral products, n.e.c.

About this level

Practical summary

Class 2391 sits in the PSIC 2019 hierarchy under C Manufacturing > 23 Manufacture of other Non-metallic Mineral Products > 239 Manufacture of non-metallic mineral products, n.e.c.. This class usually fans out into more specific subclasses such as Manufacture of Refractory Products. It is the level people use when they already know the activity family but still need the exact five-digit match.

Official note

Source-backed description

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. Manufacture of refractory articles containing magnesite, dolomite or chromite