The boiler uses quick fitting or assembly structure. The 4 ~ 6t/h boiler is of quick fitting pipe structure, exit shop after completely assembled, and the boiler of 6 ~ 25t/h is composed of 2 main components: the upper assembled component is the body heat accepting part, and the lower assembled component is of combustion equipment. 

The former part of the boiler body is arranged as water cooling wall, the upper part of it is connected to boiler cylinder, and its lower part is connected to collective chest, so as to form a combustion room and absorb the radiated heat from the furnace; its rear part is arranged with dense convection pipe bundle between upper and lower boiler cylinders; the high temperature smog after combustion shall stand for twice returning flushing transversely to the heat accepting surfaces, and shall be introduced to coal saver singly arranged, and flow into the duster and exhausted from chimney in the end. The 20t/h assembled water pipe boiler is composed of the front furnace, rear furnace, convection pipe bundle, coal saver and chain grating, and which are assembled in big components respectively for exit shop.
	
This series of boiler absorbs the merits from quick fitting boiler, features compact in structure, the boiler's shop is of one storey arranged, convenient for site installation, short in construction period, cheap in cost, and simple in operation. This series of steam boiler is suitable for industrial and living steam consumption; and the correspondent capacity hot water boiler is applied for industrial and civil heating.