Menu Contact Us Downloads News 4 MAGGIO 2021 FOREHEARTHS PRE-HEATING FOREHEARTHS PRE-HEATING and PRE-HEATING CURVES All refractory structures have to be preheated before going into operation, since they are subject to a certain thermal expansion, and thus the consequent volume increase must be gradual to avoid any breakage later.The working temperature inside the glass melting tank, as well as in the forehearths could be theoretically […] More 14 APRILE 2021 REFRACTORY SHOP Refractory Shop Why to sign in: SIGMA shows the availability of its products in stock to all customer logged, in REAL TIME. You can check our Refractory Shop by yourself and BOOK YOUR PRODUCTS through any device. You will be promptly contacted by our sales and will get the material needed for your furnaces IN A VERY QUICK […] More 7 MARZO 2021 Nondestructive testing of forehearth cover blocks Nondestructive testing of forehearth cover blocks More 18 FEBBRAIO 2021 A new alternative to fused cast alumina for soda lime glass contact applications A 95 V More SIGMA: an unrivalled supplier for speedy deliveries We are pleased to announce we have recently installed two double-disc grinding machines, one in Plovdiv, the other one in Locate Varesino. With these latest investments, we are able to speed up finishing operations and assure quicker and quicker deliveries. The company’s plants are now equipped with: Nr. 5 double-disc laser centring grinding machines (3 in Plovdiv and 2 in Locate) Nr. 5 five-axis numerical control workstations (3 in Locate and 2 in Plovdiv) Nr. 6 cutting machines (3 in Plovdiv e 3 in Locate) Additionally, we have now 3 dedicated areas (2 in Locate and 1 in Plovdiv) for pre-assembly and inspection. This state-of the-art equipment allows us to expedite grinding and pre-assembly operations both for forehearths & working ends and bottom paving both on an emergency basis or for any new orders. COVID-19 UPDATE: OPEN FOR BUSINESS As providers of glass industries our manufacturing sites have continued to operate throughout the Covid-19 pandemic whilst adjusting to the new safe working and hygiene guidelines. Many of our office staff, mainly of the sales team, continue to work from home, but a significant core of people are working from the office to facilitate production, administrative and logistic operations. To maintain the health and wellbeing of our employees, customers and suppliers we will continue to follow these sanitary guidelines unless otherwise advised by the appropriate authorities. SIGMA has supported the local authority and officially thanked for its active participation in fundraising at the early phase of the pandemic, when the dramatic impact of the pandemic had very pragmatic implications like the need to find gloves, face masks, surgical gowns and even worse the necessity to find medical equipment for the intensive care units. Events To build relationships and network with the Glass Industry personnel from all over the world and find new business opportunities, SIGMA generally takes part in the major exhibitions and events planned in the year. This year, unfortunately, due to the current and still uncertain sanitary conditions combined with the travelling difficulties, SIGMA has decided not to participate in the events planned in the first semester of 2021, i.e. Mirstekla, China Glass, Glasstec, this last one recently officially cancelled. SIGMA will make decisions whether participating or not in the remaining events planned in the second half of the year on the basis of the global sanitary evolution. Glassman Latin America is an international exhibition and conference for the hollow glass manufacturing industry where to discover and discuss the latest issues surrounding the sector. Read more Date and location to be announced The annual gathering of glass manufacturers, suppliers and stakeholders in Asia Read more The largest glass manufacturing conference in North America, where glass manufactures & suppliers meet. Read more Via delle Grigne, 12/A 22070 Locate Varesino (CO) - Italy VAT N. 01872290133 Phone +39-0331-823.195 Fax +39-0331-823.198 e-mail: office@sigmaref.it S.I.G.MA. S.R.L. Locate Varesino, Italy SIGMAREF SRLU Plovdiv, Bulgaria REFRATRADE S.R.L. Locate Varesino, Italy