Add this radiator pressure tester kit from your local HB to your toolkit.
I wouldn't order a new pipe, a piece of hose and 2 clamps should fix the brittle pipe that breaks.
Call your local Radiator Depot. Their prices are just a little more expensive than online.
A radiator damaged during shipping or a defective one is not worth the hassle. I received a defective one and discovered only after complete installation that it leaked.