... as Double H / Square fin tube & Fin economizer, is used in boilers, marine power, heat exchanger ... economizer, H fin tube economizer, H type finned tube, square fin tube.It is a kind of boiler ... the tail of heat exchanger components. Principle:H-economizer two rectangular fin, similar to a square, ... strength, and has good thermal conductivity. H-economizer can also manufacture dual tube "double H" ...