Natural gas fired boiler is a closed vessel in which water or other fluid is heated used natural gas as fuel,which is convenient and efficient. The heated or vaporized fluid exits the boiler for use in various processes or heating applications,including central heating, boiler-based power generation, cooking, and sanitation. natural gas fired boiler is an industrial boiler used gas as fuel to produce hot water or steam ,which is convenient and efficient. The hot water produced by natural gas fired hot water boilers widely used in supplying heat, and the steam produced by natural gas fired steam boilers used in AAC plant,food process, cosmetic industry ,Paper factory etc.