Multitube Once-through Boiler Special Equipment Boiler EX (Oil fired / Gas fired)EX-2500S, 3000S, 4000S(Equivalent output 2,500 - 4,000kg/h)Main Features- The boiler proper has simple construction and uses omega flow construction.- Special fin maintains high heat conductivity for long periods- Fuel waste avoided- Equipped with effective soot sanitary device- Water content is half of water tube boiler