... Doulbe H fin tube, H fin economizer, H fin tube economizer, H type finned tube, square fin tube.It ... exchanger components. Principle:H-economizer two rectangular fin, similar to a square, its edge length ... can also manufacture dual tube "double H" type fin tubes, its rigid structure, and can be ... Welded Joints less(5) Stability Supplying Scope:Fin tube Specification:Chinese GB standard or equivalent ASME ...