Hi there! It's been a while since ive modeled much in Maya, and I am having trouble deciding how to make a certain shape.

Here is the shape im trying to make:


I've tried Extrudes, but that will just give me a flat, not ribbed tube. I've also tried making a straight ribbed column, then using a Bend Deformer, but that just bends the column into an arch. I need something more like real ac ducting, that I can preferrably control via a CV curve, just like an Extrude.