How to bend tunnels frames the easy way. On Livingseeds farm we use a very simple, but effective way of bending tunnel frames.
It's cheap, it's consistent, it's effective and most importantly IT WORKS!!!
We use a 7,2 m length of steel pipe, however it can be done with a 6 m length, you just lose a lot of height.
Most people use a 6 m length and then weld on an additional 1 m to get it to 7 m long.