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About STEP-G

For over a century, STEP-G has evolved through continuous improvement programmes  and innovative ideas. Throughout our corporate history, we have always drawn on our core competencies and expertise in aluminium. Since our foundation in 1915, the focus has been on meeting challenges and generating new solutions – this is simply in our DNA.

Who we are 

ST Extruded Products Group, or STEP-G, is one of the world’s leading producers and suppliers of extruded aluminium profiles and solutions in the added value supply chain. Working in partnership with our customers, we develop future-oriented lightweight construction solutions. Based on these relationships we produce state-of-the-art alloys and highly complex aluminium profiles for a wide range of applications.  

Since STEP-G was founded in 1915  we have continuously strengthened our roots in aluminium extrusion and alloys. Qualities that distinguish the STEP-G group are innovation, performance, openness and continuity. We are your partner in the expert production of extruded aluminium profiles and added value supply chain solutions.  

To us, aluminium is much more than just a silver-coloured raw material. We have a passion for innovation and quality. Years of experience invested in the continuous improvement of our products and processes. We are a proven partner and supplier to many branches of industry.  

Globally we are your partner for sustainable aluminium lightweight construction solutions. These products are vital to our lives today and will continue to be so in the future. At STEP-G, we are committed to developing the potential of aluminium products optimally and sustainably. Our objective is to continue shaping the sustainable future of aluminium. 

Where we are and what we do

With production sites in Germany, Belgium and China, STEP-G is a multinational company. The three German press plants in Bitterfeld, Bonn and Vogt are highly specialised and offer a comprehensive range of extruded aluminium profiles and bars. The automotive industry and its direct suppliers rely on our innovative solutions and high quality. Equally the aerospace, rail vehicle industry, mechanical and electrical engineering industries plus the construction sector too. Completing our production portfolio are various forms of processing through to component manufacturing. Furthermore our foundry in Hettstedt has a comprehensive range of standard and special alloys. Providing reliable technology and consistent availability from one source.

The STEP-G plant in Duffel, Belgium, specialises in processing high-strength aluminium materials for the aerospace industry. It also machines alloys for customers in the global automotive industry. Through our Chinese facility in Tianjin, STEP-G serves international customers with regionally produced products to European standards – including processed profiles for the Asian automobile and rail vehicle industries. 

Due to continuous investment in state-of-the-art production plants, R&D, quality assurance and staff training, STEP-G has developed into a primary supplier and expert partner for numerous industries. This enables us to gain extensive experience and in-depth expertise. We channel our knowledge into constantly improving our products and steadily increasing our levels of processing. As a result we are perfectly placed for future projects – always keeping an eye on our carbon footprint and a sustainable future with aluminium solutions. 

Step by step – from our foundation to the present day

In 1915 in Bitterfeld, Germany, the foundations were laid for STEP-G, currently owned Japanese company Sankyo Tateyama Inc. This was when the first German plant was opened in Bitterfeld. It was followed in 1921 by the German plant in Bonn, then in 1946 by the plant in Duffel, Belgium and in 1952 by another German plant in Vogt. In 2000, we commissioned our Chinese plant in Tianjin. In 2006, Aleris International Inc. acquired the plants of Corus Aluminium. On 1 March 2015, the Aleris aluminium extrusion operations transferred to the Japanese company Sankyo Tateyama, Inc., a construction materials and extruded products manufacturer.

In 2019, STEP-G expanded its business operations through acquisitions. Specifically, we took over the foundry business of Aluwerk Hettstedt GmbH, a producer of cast billets and extruded profiles, and the processing operations of RMG Metallfachhandel GmbH. This process added a new location in Hettstedt. Here you can find an overview of our locations.