mandrel pipe bender pipe bending machine tube benders MANDREL PIPE BENDER Automatic Loaders / Offloaders Eagle offers a variety of choices for automatic loading and unloading. These encompass semiautomatic loaders, plus fully automatic loading systems including bundle hoppers, seam finders and robotic or pick and place offloading. Automatic loaders are available in non-mandrel or over-the mandrel pipe bender types.