Our gas oil fired economizer is finned tube design and aluminum silicate insulation, which has high thermal effiency and good condensation effect. ND steel can remove 80% oxygen. 

Boiler H finned tube economizer is a kind of boiler parts, to have two steel circular symmetry to be welded on fluorescent tubes to form ins positive shape much like letter "H", so called H-fin tube. H finned tube economizer widely used in utility boilers, industrial boilers, marine power, such as the tail of heat exchanger components.