Good quality longitudinal finned tubes of metal materials for heat exchange purpose

With an aim to increase the heat exchanging efficiency, It's usually to extend the surface area (or internal surface area) by adding fins onto a tube,  which,  through this manufacturing process,  would greatly improve and upgrade the heat transferring efficiency of heating tube, it's called Finned Tube or Fin Tubes.

♦ Welded finned tubes

♦ Extruded finned tubes

♦ Welded helical solid finned tubes

♦ Welded serrated finned tubes

♦ Welded helical serrated finned tubes