The gas-fired steam boiler is composed of the main body, combustion equipment, front and rear smoke boxes, bottom frame, electric control box, outer shell and other main components. The body is a horizontal internal combustion three-pass shell structure, the front and rear flat tube plates are butt welded to the cylinder body, the furnace is a combination of corrugated furnace, straight furnace, and conical furnace, and the rotary smoke chamber is oval, smoke The tube (stretch tube) and the tube sheet are connected by fillet welding. The boiler adopts a ceramic fiber insulation layer with high insulation performance, and is packaged with thin steel or stainless steel. This series of gas fired boilers can be equipped with various types of fully automated burners, and is equipped with a complete automatic electric control design. The boiler is equipped with a machine, valves, and electric control components. Domestic or imported parts can be selected. The boiler is a quick-install...