S.I.G.MA. GROUP, specialized in the production of refractory materials for the glass industry since 1990, supplies the full high quality range of materials including Sillimanite, Mullite, Zircon-mullite, Zircon, High alumina, Fireclay, Fused cast, Insulating, Magnesite, Silica, Special cements and concretes.
Sigma Italy produces 3,200 tons/year of special pieces and 6,500 tons/year of pressed material. Completing the range, about 5,000 tons/year are produced by our partners and controlled by our technicians both in production and auditing.
Sigma SRLU is the new facility located in Plovdiv, Bulgaria commissioned in March 2014 with a manufacturing capacity of 2,500 tons/year of vibrocast shaped pieces.
Today, S.I.G.MA. GROUP is a leader in Europe in terms of capacity, prices and lead times of shaped pieces.