Steel casting began in 1969 after the inauguration of the plant, which covered an area of 500 m2 and had a production rate of 25 tonnes of steel/hour. The mill was equipped with a 130,000V electricity substation, a cooling water system with a well 100 metres deep, and an elevated tank 30 metres in height with a capacity of 150,000 litres. Technological innovation therefore commenced in Feralpi's initial years, and in 1970 the mill was integrated downstream with a rolling mill for medium to large cross-section rebar. The plant was high-tech with a high level of automation. A second furnace came into operation the following year, bringing the year's production to 74,530 tonnes of medium to large cross-section rebar. Even logistics became a strategic asset, and the site was equipped with a railway siding with an internal track of 2 km.

In 1972 additional equipment came on stream, with a continuous casting process to produce billets. In the same year Feralpi shareholders and local partners took part in the construction of a new steel mill in Calvisano (BS), with a 50-tonne furnace for producing billets for use in rolling processes. In 1974 another 30-tonne furnace and a new 3-line continuous casting process was set up for the production of billets. Steel mill production reached 203,750 tonnes and rolling mill production reached 188,450 tonnes. A focus on the environment resulted in the installation of an off-gas purification plant, and a third furnace also commenced operation, which also had a purification plant attached. In 1975 the plant was equipped with a shredder upstream, to crush scrap cars. The aim was to improve the quality of the scrap on which the efficiency of the entire production cycle depended.

In 1983 the founder Carlo Pasini died prematurely. His wife Camilla, sons Giuseppe, Giovanni and Cesare, and other partners took over the running of the company, to ensure business continuity and fresh impetus.

Ongoing research into high-performance products took shape, and in 1988 the company was one of the first in Italy to obtain the patent for the production of rebar using the Tempcore process, which guarantees the high quality of the finished product.
The continual improvement of production processes took another step forward in 1990, with the installation of a shearing press for cutting scrap, to optimise the scrap iron supply and processing phase.

In 1997 the three furnaces in Italy were completely replaced with one of a higher capacity, and with one five-line continuous casting process. Feralpi was also one of the first in the sector to install an off-gas collection and emission reduction system. The production of reinforcing steel in coils and wire rod commenced in 2001, and a new recoiling plant was installed.
In 1999 Feralpi entered Romania by acquiring 50% of Ductil Steel Sa, specialising in the production of wire rod, rebar and down-stream processed products.
In the meantime, continuous casting commenced in Germany in 1994 after a major industrial revamp, and the rolling mill became operational the following year. From that point onwards, 500,000 tonnes of steel for reinforced concrete would be produced in Riesa, where cold working also started in 1996 to extend the product range.
The investments never stopped - in 2001 at Feralpi Siderurgica the production of reinforcing steel in coils and wire rod commenced, and a new recoiling plant was installed.

The development of the business continued. While remaining loyal to its core steelmaking business, in 2007 diversification into the environmental, energy, fishing and finance sectors commenced.

After extending its scope of action in Europe, the Feralpi Group also targeted the verticalisation of the business. In 2009 the company DE.FI.M. in Alzate Brianza (CO) was taken over and renamed Nuova Defim SpA, manufacturing welded wire mesh for construction and industrial use, and metal wire gratings and fencing for civil and industrial applications. This first step preceded numerous others.
In 2009, the technology to control atmospheric pollution was recognised by the Federal Ministry for the Environment in Germany as the best technology available.

In 2012 Feralpi pushed verticalisation further by taking over the company Orsogril, through Nuova Defim. This historic Como-based company produced steel gratings for use in construction and architecture, and the takeover created the only company in Europe providing the market with metal grating and wire solutions.

Keen to capitalise on business opportunities outside of Italy, in 2013 Feralpi Algérie was established with its headquarters based in Orano, to best serve the North African market.

In the same year, Feralpi received the 2013 Saxony Environmental Award for its new steam and energy generation system (producing energy using waste heat from the electric furnace) at the innovative ESF plant in Riesa.

2015 was the year of the global EXPO event in Milan. By supporting the Orgoglio Brescia association, which created and produced the Tree of Life design for the event, the Feralpi Group used its steel to contribute to the event’s iconic international symbol. Even the main EXPO thoroughfares, the Cardo and Decumanus roads, the Palazzo Italia building, the Brazil pavilion and the hanging gardens carried the hallmark of the Group's steel, with products and services by Presider, MPL and Nuova Defim Orsogril.

In 2016 the Feralpi Group acquired a new production facility in Nave (Brescia), establishing Feralpi Profilati Nave, specialising in the production of rolled angle sections, U-sections and T-sections.

Feralpi took another step forward by taking over the entire stake of MPL and Presider, which in turn expanded with Presider Armatures in Paris.

The system to recover heat from the Lonato del Garda steel plant was connected and enabled to supply the district heating network for the area and community, leading to environmental, economic and safety benefits.