

Our longitudinal fin, in the form of a U-shaped fin channel, is resistance welded along the tube's longitudinal axis.
| Tube Sizes: | ¾" O.D. to 12" NPS (12.75" O.D.) |
| Fin Heights: | .21" to 1 ½" |
| Fin Thicknesses: | 20 ga. (.035") to 18 ga. (.050") |
| Material: | Brass, Mild steel, stainless steel, and nickel alloys. |