... in boilers, marine power, heat exchanger components Definition:H fin tube, also know as Doulbe H finned tube, H fin economizer, H ... tail of heat exchanger components. Principle:H-economizer two rectangular fin, similar to a square, its edge length for the fluorescent ... others;Material: carbon steel, stainless steel, Aluminium and alloy steel;Bare tube size:OD20mm-OD273mm;Fins Pitch: 3mm-30mm;Fins ...