Bryson Trumble

Sertubi SpA manufactures ductile iron pipes and fittings for water supply and sewage applications. Its products are used in the construction of pipelines for the carriage of potable, industrial, irrigation, and waste water. The firm also offers consulting services providing technical information and applications to its customers. The company was founded in February 1997 and is headquartered in Trieste, Italy.

Duferco Italia Holding SpA engages in the manufacture and distribution of steel and steel products. It offers slabs, hot rolled coils, plates, billets and blooms, beams and merchant bars, wire rod, tin plate, iron ore, coal, scrap, pig iron, and vanadium. The company is headquartered in San Zeno Naviglio, Italy.

Duferdofin SpA produces and markets steel and metal products. The company manufactures beams and heavy structural steel. Duferdofin is headquartered in San Zeno Naviglio, Italy

Part of Duferco Participations Holding Ltd., Acofer Prodotti Siderurgici Srl is an Italian company that engages in manufacturing fabricated plate work products. The company is based in San Zeno Naviglio, Italy.