Single H fin tube, known as Square fin tube & Fin economizer, is used in boilers, marine power, heat exchanger components. Definition:H fin tube, ... also know as Single H fin tube, H fin economizer, H fin tube economizer, H type finned tube, square fin tube.It is ... 1-10mmOther sizes of the finned tube can be discused with customers' requirements.Welcome to contact us. H/Single H/Square fin ...