50 years of
experience and dedication

We are specialized in the manufacture and marketing of flat steel products cut to size

We are guided by 50 years of experience in the market of cut-to-size flat steel products and our will to innovate.

Thanks to our long history, our professional team is always on hand to provide advice and develop solutions.

Our commitment to offer a fast and efficient service to the most demanding clients has led the company to be in a process of continuous territorial and technological expansion. We have three modern processing plants for flat products in Cantabria, Barcelona y Madrid, with a total area of 69.500 m2.

What makes us different?

Control de procesos


Mejora continua




Satisfacción del cliente


Trato directo






A company with a history

  • 1973


    SUSIDER was founded in 1973 in Cantabria for the transformation and commercialization of steel products. The two initial lines of business were the cutting of flat steel products and the commercialization of wire rod

  • 1993

    Flat steel product

    SUSIDER decided to cease wire rod, focusing on the cutting of flat steel products,
    an activity that we continue to develop today

  • 1990 / 1995

    New factories

    Given the high market demand, two new SUSIDER factories are opened in
    San Martín de la Vega (Madrid) and Esparraguera (Barcelona)

  • Present

    Flat cut product

    SUSIDER currently supplies flat products cut to size for customers.
    Mainly for Spain, Portugal and France from Santander, Madrid and Barcelona,
    each of them being leading centers in the market

Our human team,
the greatest asset

A stable and experienced staff of highly qualified and proactive professionals who provide solutions to each of the challenges that our clients propose to us.

Thanks to our long history, we guide, advise and provide solutions in technical questions that the client requires.