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ArcelorMittal Sestao

About ArcelorMittal Sestao

Located in the Biscay municipality of Sestao, on the banks of the Bilbao River, and connected to the rest of the world by the Harbour of Bilbao, ArcelorMittal Sestao is a new generation steel plant which is technologically advanced.

These facilities are characterised by having processes considered as Best Available Technologies (BATs) in their design and construction, which enables to manufacture a steel coil of up to 30 tonnes in less than three hours. The site has a capacity of 1,800,000 tonnes of hot rolled steel coils and 600,000 tonnes of pickled coils per year with a high level of flexibility and a fast turnaround time.


  • 1 scrap yard 
  • 2 direct current D/C Electric Arc Furnaces
  • 2 ladle treatment stations
  • 2 fume treatment plants and a water treatment plant
  • 2 continuous casting lines for thin slab
  • 2 tunnel furnaces
  • 7 stand finishing-rolling mill
  • 2 coilers
  • different auxiliary shops
  • 1 continuous pickling line
  • hydrochloric acid regeneration plant and neutralisation plant


ArcelorMittal Sestao offers a wide range of products:

  • Steel for commercial, structural and moulded galvanised steel products
  • Ultra thin steels (UltraFinos)
  • Steels for cold moulding and forming
  • Striated and diamond plate sheets
  • Micro alloyed steels (high-strength low alloy steels)
  • API steels for piping
  • Structural steels – construction steels
  • Steels resistant to Atmospheric corrosion
  • Dual Phase steels



The ArcelorMittal Sestao products are used in the Automotive, General Industry and the Construction sectors. ArcelorMittal Sestao is a regular supplier for many Steel Service Centres, pipes and tubes manufacturers, terollers, stockists, profilers, industrial storage, building and appliances customers.

Specific dimensions & performances

ArcelorMittal Sestao produces hot rolled steel coils between 845 and 1550 mm wide and 1 to 14 mm thick.

Sestao´s pickling line produces pickled steel coils between 845 and 1550 mm wide and 1 to 4 mm thick.

The thin cast slab process allows ArcelorMittal Sestao to achieve an outstanding gauge performance compared with traditional mills, as well as very consistent properties along the coil.

Environmental declaration ArcelorMittal Sestao

  English version
  Spanish version
  Euskera version


Integrated policy

  English version
  Spanish version