... components. Definition:H fin tube, also know as Doulbe H fin tube, H fin economizer, H fin tube economizer, H type finned tube, ... , and has good thermal conductivity. H-economizer can also manufacture dual tube "double H" type fin tubes, its rigid structure, ... Specification:Chinese GB standard or equivalent ASME standard or others;Material: carbon steel, stainless steel, Aluminium and alloy steel ...