Finned and Studded Tubes

Finned and Studded Tubes

Finned tubes are used wherever electricity is generated or raw material is refined and efficient cooling is required. Finned tubes are used in condensers, coolers and furnaces. The larger surface area means that fewer tubes are needed compared to the use of plain tubes. The higher efficiency of finned tubes thus enables significant space and cost savings.

Surface expanded tubes are available in various materials and designs:
„G“ (Embedded) „I“
„L“ (L-Fin) „N“ (Low Fin)
„KL“ (KL-Fin) „M“ (Medium Fin)
„DL“ / „LL“ (DL/KL-Fin) „LFW“ (Longitudinal Channel Fin)
„HY“ (Extruded) „LFS“ (for Boiler wall constructions)
„HYS“ (Extruded Serrated) „S“ (Square Fin)
„WO“ (Welded On) „Double S“ (Rectangular Fin on 2 tubes)
„WOS“ (Welded On Serrated) Studded Tubes
Material testing by an independent testing company such as TÜV, Lloyd's Register EMEA, Germanischer Lloyd, Bureau Veritas, SGS Germany and others possible.


  • In all standard and also non-standard dimensions and characteristics
  • Not mentioned standards and grades on request
  • In addition to the ASTM standard, we also supply according to the following standards: DIN, EN, BS, NFA, JIS, GOST and others.

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