... fin tube, known as Square fin tube & Fin economizer, H finned tube, is used in boilers parts, marine power plant. Name ... tube, H fin economizer, H fin tube economizer, H type finned tube, square fin tube.It is a kind of boiler ... : 10mm-30mm;Fin thickness:1-10mm; Other sizes of the finned tube can be discused with customers' requirements. Welcome to contact ...