SZL adopts a double-drum vertical structure, an assembled water-tube steam or hot water boiler. This product is divided into two parts, the upper and lower parts, to be assembled and shipped out of the factory. Reasonable design, compact structure, beautiful appearance, high thermal efficiency, and sufficient output. The combustion equipment adopts a new type of scale grate, and the front and rear axles are checked for parallelism and diagonal before leaving the factory. It is reliable in operation and easy to adjust. The tail flue is equipped with an economizer to increase the inlet water temperature of the drum, lower the exhaust gas temperature, and reduce the exhaust heat loss. The main body of the boiler is manufactured and inspected in strict accordance with the "Interim Regulations on the Safety Supervision of Boiler and Pressure Vessels" and the "Regulations for the Supervision of Boiler Safety Technology" and other relevant standards, with excellent quality. The water supply can be automatically controlled, and the air distribution in the air chamber can be remotely adjusted, with temperature, pressure, and water level protection, which is safe and reliable. Designed for Type II or Type II bituminous coal, it can be equipped with a secondary air swirling combustion-supporting device, which is extremely beneficial to the full combustion of fuel and the ignition of coal. The structure is compact, the appearance is beautiful, the whole is quick-installed or assembled, and it is convenient to transport and install.