Sorry don't no what those are but I would use rebar.

Here is a link that might be useful: Types of vertical gardens

Hi prairiemoon,
I'd probably just lay them on the ground with a couple cement blocks on them for maybe a week. Or....you could set them upright, straight and you and someone else could get at opposite ends and try to bend them in the opposite direction.

Are you using them for fencing around the garden, or for trellises?

So did you get them flattened out okay?

Hi Catherine - Yes, I guess we did. :-) We did put cement blocks on them, but we still had a little bow to the panels when we were finished. One was more bowed than the others, so I think that was a little more noticeable. I didn't care, it wasn't that noticeable and it didn't effect the function of the trellises at all. I LOVE them! We used them for trellises in the vegetable garden. Great to have a nice large trellis, that should have a fairly decent lifespan. Thanks for your help. :-)

Glad to hear it all worked out for you!