If you want multiple bends of larger radius (more than 6 x OD).then that is not a problem on a push bender (although quite tricky on a simple roll bender).

Figure 1   Bending tubes basic information

Sometimes you will need a big curve. Typical examples occur in furniture applications. In this case you will need a tube manipulation company who has a CNC bending machine with combined bend and push bending capabilities. 

Figure 2   Products with big curve

If you want more than one bend radius combined with push bending radius on the same component then check that the manufacturer has a multi-stack bend and roll bending functions machine!Excellent suppliers can provide you with the most suitable solution if you can provide pipe size, product photos or drawings.

Figure 3   Two stack for bending and push bending