Established in 1996, Lusosider Aços Planos S.A is the only Portuguese company of the steel sector which produces and sells steel sheets with anticorrosion coating. It is a steel re-rolling company that uses hot-rolled steel coils as raw materials. They are stripped and cold rolled to smaller thicknesses, subsequently passing through an annealing process to obtain the desired mechanical properties, and finally coated with zinc through hot dipping (galvanized product).

Lusosider also produces two other products, cold rolled and stripped / oiled. In addition to its products, Lusosider sells tinplates produced in Brazil by CSN – its sole shareholder.

With headquarters and a manufacturing facility in Palo Pires, Seixal, it has a production capacity of 500,000 tons per year of sheet products. Its products can be applied in the industries of civil construction, for the manufacture of pipes, profiles, ventilation ducts, metal structures and others; in the metal furniture industry, for the manufacture of cabinets and boxes; the packaging industry, the manufacture of drums; and also in the automotive sector, in the manufacture of auto parts.

The main production facilities and lines are:

  • Two Stripping lines
  • Rolling trains, reversible
  • Tempering Train
  • Galvanizing Line
  • Annealing Furnaces
  • Finishing and Inspection Line
  • Cross Section Line
  • Packaging Line

Lusosider is ISO 9001: 2008-certified (products and services).

Lusosider is certified for the standards ISO 9001:2015, ISO14001:2015 and for the Factory Production Control according to the UE Regulation 305/2011 and standard EN 10025-1:2004 which allows the company to apply the CE Mark. Lusosider has its own Policy for Quality, Environment, Safety and Health at Work.

The performance declarations for Lusosider products with CE Mark are presented below:

DoP – S235JR

DoP – S235JR_Laminada a Quente Estrutural_PT_20180530

DoP – S235JR_Aciers Laminés á chaud de Construction_FR_20180530

DoP – S235JR_Laminado en Caliente Estructural_ES_20180530 

DoP – S235JR  Structural Hot Rolled

DoP – S275JR

DoP – S275JR_Laminada a Quente Estrutural_PT_20180530

DoP – S275JR_Aciers Laminés á chaud de Construction_FR_20180530

DoP – S275JR_Laminado en Caliente Estructural_ES_20180530

DoP – S275JR  Structural Hot Rolled

Check the General Conditions for the Sale of Steel Products and the Rules for Handling, Storing and Transport of Finishing Product, which were developed within the life cycle analyses of our product and contribute for the increase of its useful life time.

General conditions of purchase and supply


Lusosider – Aços Planos, SA
2840-075 Aldeia de Paio Pires

Phone: (+351) 21 227 83 00
Fax: (+351) 21 227 83 90
Internet address:

Commercial department:

Phone: (+351) 21 227 83 08
Fax.: (+351) 21 227 83 91

Human resources department:

Phone: (+351) 21 227 83 23
Fax: (+351) 21 227 83 90

Procurement department:

Phone: (+351) 21 227 83 66
Fax: (+351) 21 227 83 94

Last update on July 30, 2021.

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