Our company operates in heating industry with steel boiler, cast iron boiler, and cast iron radiator production. GNB is one of the biggest actors in the global solid fuel boiler and cast iron radiator markets with its export to many countries in the world, especially to Europe, CIS countries, and North Africa, for more than 8 years.

With its headquarters in Istanbul, GNB is the first company in Turkey which holds steel boiler and cast iron boiler production from A to Z in its factory under the name of "HETA ISI ÜRÜNLERİ A.Ş." in Eskişehir, Turkey, which is established on 16.000m2 open area, and 8.500m2 indoors area, with its cutting edge technology foundry, CNC machines, steel boiler welding and mounting line and robots. GNB operates with the capacity of 20.000 unit cast iron boilers, 15.000 unit steel boilers, and 500.000 sections of cast iron radiators.

Operating in 40 countries all around the world, GNB boosts its efficency in export day by day. As one of the pioneers in the heating industry, our company modernises itself everyday with new investments and with its increasing product range. GNB is motivated to maximise the customer satisfaction with after sale services in all levels as well as providing the appropriate products.