UK SIC 2007 code in Section C: Manufacturing
24100 Manufacture of basic iron and steel and of ferro-alloys
SIC 24100 is the UK code for manufacture of basic iron and steel and of ferro-alloys. Companies House accepts it when you register a company or file a confirmation statement.
- Code
- 24100 (UK SIC 2007, Companies House list)
- Section
- Section C: Manufacturing
- Division
- 24 Manufacture of basic metals
- SIC 2026
- 24.10 Manufacture of basic iron and steel and of ferro-alloys (1:1)
- Closest US NAICS
- 331110, 331221, 331222, 332912 and 2 more
Activities ONS lists under 24100
The ONS index assigns these 142 activities to this code. If one describes your company, this is the code to use.
- Alloy bearing steel (manufacture)
- Alloy pig iron (manufacture)
- Alloy tool steel (manufacture)
- Angles of stainless steel (manufacture)
- Bars of stainless steel (manufacture)
- Billets made of semi-finished steel (manufacture)
- Blackplate (manufacture)
- Blooms made of semi-finished steel (manufacture)
- Boron steel (manufacture)
- Bulb flats made of steel (manufacture)
- Cold reduced steel slit strip >= 600mm (manufacture)
- Cold reduced wide steel strip >= 600mm (cold reduced coil) (manufacture)
- Cold rolled narrow steel strip >= 600mm (manufacture)
- Cold rolled steel plate (manufacture)
- Cold rolled steel sheet (manufacture)
- Cold rolled steel slit strip >= 600mm (manufacture)
- Cold rolled wide steel strip >= 600mm (cold rolled wide coil) (manufacture)
- Continuous cast products made of steel (manufacture)
- Corrugated sheets made of steel (manufacture)
- Directly reduced iron (manufacture)
- Electrical sheet steel (not finally annealed) (manufacture)
- Electrical steel (manufacture)
- Electro zinc coated sheet steel (manufacture)
- Electrolytic chromium/chromium oxide coated steel (manufacture)
- Electrolytically metal coated sheet steel (manufacture)
- Engineering steel (manufacture)
- Ferro alloys (high carbon ferro manganese) (manufacture)
- Ferro aluminium (manufacture)
- Ferro chromium (manufacture)
- Ferro molybdenum (manufacture)
- Ferro nickel (manufacture)
- Ferro niobium (manufacture)
- Ferro phosphorus (manufacture)
- Ferro titanium (manufacture)
- Ferro tungsten (manufacture)
- Ferro vanadium (manufacture)
- Ferro zirconium (manufacture)
- Ferro-alloys (except high carbon ferro-manganese production) (manufacture)
- Ferrosilicon (manufacture)
- Ferrosilicon chromium (manufacture)
- Ferrosilicon manganese (manufacture)
- Ferrosilicon titanium (manufacture)
- Ferrosilicon tungsten (manufacture)
- Ferrous products production by reduction of iron ore (manufacture)
- Fish plates (hot rolled) (manufacture)
- Fish plates and sole plates (non-rolled) (manufacture)
- Flat rolled steel products in coils or straight lengths >= 600mm (manufacture)
- Forged bars (manufacture)
- Forged rail accessories (manufacture)
- Forged sections (manufacture)
- Forged semi-finished products (manufacture)
- Foundry pig iron (manufacture)
- Galvanised sheet steel (manufacture)
- Grain oriented electrical sheet steel (manufacture)
- High carbon ferro-manganese (carbon over 2%) (manufacture)
- High speed tool steel (manufacture)
- Hollow drill bars made of steel (manufacture)
- Hot dip metal coated sheet steel (manufacture)
- Hot dip zinc coated sheet steel (manufacture)
- Hot rolled steel angles (l-sections) (manufacture)
- Hot rolled steel base plates (manufacture)
- Hot rolled steel beams (manufacture)
- Hot rolled steel bearing piling (manufacture)
- Hot rolled steel channels (manufacture)
- Hot rolled steel columns (manufacture)
- Hot rolled steel cut lengths (manufacture)
- Hot rolled steel fish plates (manufacture)
- Hot rolled steel flat bars (manufacture)
- Hot rolled steel heavy sections (manufacture)
- Hot rolled steel hexagonal bars (manufacture)
- Hot rolled steel h-sections (manufacture)
- Hot rolled steel i-sections (manufacture)
- Hot rolled steel joists (manufacture)
- Hot rolled steel light sections (manufacture)
- Hot rolled steel narrow strip (manufacture)
- Hot rolled steel plate (manufacture)
- Hot rolled steel quarto plate (manufacture)
- Hot rolled steel railway materials (manufacture)
- Hot rolled steel reversing mill plate (manufacture)
- Hot rolled steel round bars (manufacture)
- Hot rolled steel sections for mining frames (manufacture)
- Hot rolled steel sheet (manufacture)
- Hot rolled steel sheet piling (manufacture)
- Hot rolled steel sole plates (manufacture)
- Hot rolled steel special bars (manufacture)
- Hot rolled steel special sections (manufacture)
- Hot rolled steel square bars (manufacture)
- Hot rolled steel t-sections (manufacture)
- Hot rolled steel u-sections (manufacture)
- Hot rolled steel wide strip (hot rolled wide coil) (manufacture)
- Ingots of stainless steel (manufacture)
- Ingots of steel (manufacture)
- Iron (manufacture)
- Iron of exceptional purity production by electrolysis or other chemical processes (manufacture)
- Iron powder production (manufacture)
- Iron shot (manufacture)
- Lead coated steel sheet (manufacture)
- Liquid steel (manufacture)
- Low carbon ferro manganese (carbon 2% or less) (manufacture)
- Manufacture of hot-rolled rods of steel
- Metal sand for sandblasting (manufacture)
- Narrow slabs of semi-finished steel (manufacture)
- Nodular pig iron (manufacture)
- Non-alloy pig iron (manufacture)
- Non-alloy steel (manufacture)
- Non-oriented electrical steel sheet (manufacture)
- Organic coated steel sheet (manufacture)
- Other alloy steel (manufacture)
- Painted steel sheet (manufacture)
- Permanent way material (except rails production) (manufacture)
- Pieces roughly shaped by forging (manufacture)
- Plastic coated steel sheet (manufacture)
- Primary products of stainless steel (manufacture)
- Production of granular iron
- Rails of iron, steel or cast iron (manufacture)
- Remelting ferrous waste or scrap
- Remelting scrap ingots of iron
- Rods made of steel (in coils) (manufacture)
- Rods of stainless steel (manufacture)
- Rounds of semi-finished steel for seamless tube production (manufacture)
- Sections of stainless steel (manufacture)
- Semi-finished products of stainless steel (manufacture)
- Shapes of stainless steel (manufacture)
- Sheet piling production (manufacture)
- Silico manganese steel (manufacture)
- Sleepers (cross ties) made of iron or steel (hot rolled) (manufacture)
- Sole plates (hot rolled) (manufacture)
- Spheroidal graphite pig iron (manufacture)
- Spiegeleisen (manufacture)
- Sponge iron (manufacture)
- Stainless steel (manufacture)
- Steel in primary form, from ore or scrap, production (manufacture)
- Steel making pig iron (manufacture)
- Steel powders (manufacture)
- Steel sheet (not finally annealed) (manufacture)
- Steel shot (manufacture)
- Structural steel (manufacture)
- Terneplate (manufacture)
- Tinplate (manufacture)
- Welded sections of iron and steel (manufacture)
- Wide slabs made of semi-finished steel (manufacture)
- Wire rods made of steel (manufacture)
Source: ONS UK SIC 2007 alphabetical index.
What changes in SIC 2026
ONS published UK SIC 2026 in 2026. Its correspondence table maps this code's class (24.10) to:
| SIC 2026 code | Heading | Link type |
|---|---|---|
| 24.10 | Manufacture of basic iron and steel and of ferro-alloys | 1:1 |
"1:1" means the class carries over unchanged in scope; other link types mean it was split or merged. Companies House still uses SIC 2007, so keep filing with 24100 until it announces a switch.
Closest US NAICS codes
Matched through the shared international class (ISIC Rev. 4). Treat these as a starting point and read the definition before using one.
- 331110Iron and Steel Mills and Ferroalloy ManufacturingNAICS
- 331221Rolled Steel Shape ManufacturingNAICS
- 331222Steel Wire DrawingNAICS
- 332912Fluid Power Valve and Hose Fitting ManufacturingNAICS
- 332919Other Metal Valve and Pipe Fitting ManufacturingNAICS
- 332996Fabricated Pipe and Pipe Fitting ManufacturingNAICS
Data last changed November 14, 2026. Source: Companies House condensed SIC list. How this page is built.