SZS series gas fired boiler adopts "D" type arrangement, natural circulation, double tube tube boiler, tube longitudinal arrangement, membrane type water wall structure, micro positive pressure combustion. The furnace is covered by the membrane wall. The flue gas enters the convection tube bundle connected between the upper and lower drum from the outlet of the furnace. After the flue gas flows through the convection tube bundle, it enters the heating surface of the tail -- ND steel spiral fin energy saver and condenser. Gas Fired Steam Boilers Performance Feature Full membrane wall structure, no air leakage, small heat loss in smoke exhaust, high thermal efficiency; Compact structure, small installation volume, saving investment; The gas steam boiler uses natural circulation and uses a larger section ratio, hot water boiler uses forced circulation, water circulation is safe and reliable; Equipped with well-known and efficient brand burners, auxiliary machines and accesso...