ZOZEN 20-ton gas-fired steam boiler is mainly divided into WNS series and SZS series. This time, the user chose ZOZEN SZS 20-ton gas-fired steam boiler. The boiler adopts a water tube structure, the heat transfer and safety are guaranteed. At the same time, the large furnace design of the boiler provides a place for full combustion of fuels, and the initial emission of nitrogen oxides is low.