SIGMA Srl experts in refractories was established in 1990. Over the years major investments have been done to significantly increase our capacity with the acquisition of new premises to improve firing facilities, cutting, grinding equipment and also Research & Development. With the aid of refractory experts, highly trained skilled workers and experienced sales staff, have allowed SIGMA Group to become one the main refractory producers in Europe and a reliable partner for several glass factories on the five continents.

Main products from Sigma Group include:

  • Plungers
  • Tubes
  • Stirrers
  • Needles
  • Spouts
  • Orifice Rings
  • Channel Blocks