... area of the grate, being suitable for variety of coal. 1.4MW to 4.2MW products adopt shop-assembled ... eour company also produce :Economizer, air preheater, coal conveyor, slag removal machine, water treatment equipment, exhauster, draught fan ,air blower, ... feed water pump, valve instrument, crusher, chimney, electric cabinet, multi-cyclone and so on. hot water boiler -- SZL4.2-0. ...