We are proud to announce that Mr Roberto Mari has been recently awarded a certificate of gratitude by the Mayor of Locate Varesino, the small town where SIGMA Italy is located.
Newsletter
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 […]
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 […]
Nondestructive testing of forehearth cover blocks
A 95 V