The velocity profile in a pipe depends on whether the flow is turbulent or laminar - for the laminar case, you get a parabolic profile so water "near the center" would travel much faster than water "near the wall".
However, I believe your situation is turbulent, so we don't have to worry about that. This means we can just calculate the velocity of the liquid based on the flow rate and the area - volume per unit time divided by area is length per unit time (velocity).
I won't do the math for you - it should be easy once you realize the above. And again, since the flow rate is given, it doesn't really matter whether the pipe is straight or not.
When you get the velocity, you will want to calculate the Reynold's number of the flow (look it up if you need to) to confirm you have turbulent flow so the assumption of "uniform velocity profile on average" is more or less true.