Those bends are way way too sharp…. it will start to stretch the tube and make it thinner on bend if you bend it that aggressively.. it will not be safe … i guess the whole point is to make it safe when you install the cage … There are some charts where you can find max angle per inch for different tube wall thicknesses .. google will be your best bet or call for some race shop.. i bet they are willing to help you out with facts.. make sure that you know your material hardness, wall thickness ( od – id ) etc. they can give you the answer..
Would do it here.. but i bet there in Us are different rules for cage than here in Finland.
Edit: you can see the tube is stretching on that hoop.. on all bends. the tube is getting smaller radius on stretched spot and you start to see waves on it eventually. where the material is starting to have micro fractures and grumbling under pressure.
Tip.. fill the tube with sand when you bend it.. it will support the pipe from inside.. you could do it with water… as it will not give any room.. but can potentially be dangerous if pressure builds up too much.
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