Basics.... Two descriptions... Pipe which is measured by it`s o\d (outside diameter). Tube which is measured by it`s i\d (Inside diameter).

The Mandrels for pipe or tube differ in actual size. (Bits the pipe\tube is bent around).

Wrong way around, tube is measured O/D, pipe is measured I/D - cheap bottle jack pipe benders will wrinkle and crush tube and make it no more than decoration in an accident - same for stainless steel which work hardens and is brittle in the HAZ when welded without heat treating afterwards.

Tube and pipe can both have a seam or be seamless, that's not a property of either, that's a property of how it's made, welded, rolled, drawn, etc. If your roll cage has a seam down it chances are it's cheap ERW exhaust tube which is soft as s**t and has a liability to fold and split in an accident, leaving you bouncing around inside a car full of sharp steel edges.

If your wanting a proper roll hoop rather than something decorative I'm not far down the M1 and have a proper CNC tube bender and stock ROPT510 (a CDS tube specifically for cage making, more ductile and welds better than cheap CFS) and T45 tube (about twice the strength of common CDS....but 3 times the price).

Hi Phillip,

Just wondering if you are still able to make roll cages?

I don't really do many any more but I do still have the equipment for doing the odd cage/repairs.