Heat exchanger flat fin tube with quantity of fin per 1 meter 250 or 333

Base tube:

Bearing tube cross-section is a flat oval consisting of two straight runs and two circular runs; the larges axial size is 219 mm, the smallest axial size is 19 mm; tube wall is 1,5 mm.

Fins:

Process: Zigzag finning. Fins height is 20 mm, thickness of a fin is 1 mm; quantity of fins is 333.

Being assembled, tubes must be hot-dip galvanized.