... 4.Type: Chain layer combustion This type of boiler has two drums and water tube structure, making it easier to examine, repair ... s the ideal heating equipments for hospitals, schools, sealed army, industrial and mining enterprises, and so on. The type SZL7-1 ... fan ,air blower,feed water pump, valve instrument, crusher, chimney, electric cabinet, multi-cyclone and so on hot water boiler -- SZL14-1.0/115 ...