I am doing BEM fixed tubesheet calculation, the tubes is low fin tube.

How can I input tube diameter and thickness in PVElite?
(tube parameter as following)

Plain end and fin OD is 19 mm. This dimension is measured by NOGO/GO ring gauges. Common ring gauge sizes are 18.84 mm/19.00 mm (0.742/0.748) and 18.97 mm/19.13 mm (0.747/0.753).
The fin height is 1.27 mm (0.050) min., and 1.42 mm (0.056) average.
The fin thickness is 0.28 mm (0.011) average.
The wall thickness under fin (60-195065) is 1.65 mm (0.065) average, and 1.47 mm (0.058) min.
The wall thickness at the plain ends (60-195065) is 2.11 mm (0.083) average, and 1.95 mm (0.077) min.

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shaojunzhou