Product Introduction: This series of coal (wood) fired hot water boilers is manufactured using aluminum alloy, stainless steel, or carbon steel. It is mainly composed of components such as heads, drums, fireboxes, firebox tops, flue pipes, chimneys, and transverse water pipes. It is specifically designed for fuels that are difficult to burn, such as biomass, coke, and anthracite. The combustion method employs a circular hole fixed grate, with a radiant arch arranged at the top of the furnace chamber, reducing the water cooling in the furnace and enhancing combustion intensity. The arrangement of the high-temperature convection flue pipes increases the convection heating surface, strengthens convection heat transfer, and significantly improves the boiler's thermal efficiency compared to traditional vertical hand-fired boilers, ensuring complete combustion of the fuel.