The Société Serret, Lelièvre et Cie was constituted in 1834 to build and run the Forges de Denain.

Serret and Dumont were also partners in the Forges de Raismes (Renaux, Dumant et Cie).

[3] In 1834 Benoît Vasseur, using external capital, asked for permission to build an iron factory at Anzin similar to that at Denain.

[3] Both the Denain and Anzin companies had little difficulty training their workers, since there was a long history of mining and industry in the region.

[5] Construction of the Chemins de Fer du Nord drove the integration of small forges into rolling mills to supply rails.

[3] Talabot combined the Forges et Laminoirs d'Anzin with the Serret, Lelièvre, Dumont et Cie company of Denain to form the Société des hauts-fourneaux et des forges de Denain et Anzin, the largest metallurgical company in the Nord Department.

[10] A difficult period for the manufacturers of the north of France began in 1860, which they blamed entirely on the free-trade Cobden–Chevalier Treaty signed at the start of the year.

[12] In 1860 the Inspector-General of Mines, Charles Combes, wrote to the Minister of Commerce that the real goal of the Comite des Forges, of which Leon Talabot of Denain-Anzin was president, was to maintain the price of iron by using any arguments of threats they thought would work.

[15] Unlike the nearby coal mines, the demand for steel fluctuated widely, and until 1872 the company's finances were shaky.

[19] The company absorbed the Compagnie des Charbonnages d'Azincourt on 12 July 1906 to ensure a supply of affordable coal.

However, the administration of Algerian governor Charles Lutaud submitted an alternative proposal to the government that required the company to build blast furnaces in Bône and to pay higher royalties to Algeria.

[24] The agreement and specifications for this project were signed early in 1918, with 85% of the capital supplied by Mokta and Hauts Fourneaux de Rouen, and 15% by Denain-Anzin and a consortium of Algerian banks.

[31] After the June 1940 defeat of France during World War II (1939–45), a law of 16 August 1940 created Sidenor, the Groupement des Industries Side-rugiques du Nord-Pas-de-Calais.

In 1965 it merged with the Société des forges et aciéries du Nord et de l'Est to form Denain-Anzin Nord-Est.