DZL Series Coal fired steam(hot water) boiler 1.ISO9001 certificate 2.Satisfied ... ,Blast blower,Slag extractor,Dirt catcher,Coal conveyor,Soften water,Small pump,economizer,Electrical Cabinets and so on. ... Body comprised the pot shell, smoke box, water wall tube, down tube and under boxes on ... h)Operation pressure (Mpa)nominal steam (°C)nominal feed water (°C)Heating area(m2)active area of the grate ...