I have been bending pipe of all kinds for 25 years.
From 4 inch sch 80 steel pipe to you name it.
What you want to do is make a mandrel so the pipe doesn't collapse.
This will work by making the center board just about as wide as the pipe is and have sides that stick up at least as much as 1/2 the diameter of the pipe.
If made it sturdy enough and the sides were all square you can bend square tubing.
The mandrel can also be made on a wood shaper with a hard piece of wood.
Any good cabinet shop with a split collar shaper can do this.
Or you may be able to cut the radius with a router.
Worth
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