<![CDATA[EC21 Product Catalogs - continuous helical]]> <![CDATA[Continuous Helical Welded Heat Exchanger Fin Fube SA213-TP304H NPS 2'' X SCH80S]]> <![CDATA[Finned Tube]]> <![CDATA[High-frequency Welded Helical Finned Tubes]]> <![CDATA[KL Type Finned Tube, Knurled Finned Tubes]]>