Tube hydroformation(THF) is complicated and requires in-tube pressurization and axial feeding to cooperate with each other so as to form high quality parts.

• 管液压成形(THF)过程非常复杂,它往往要求管内压力施加和管端轴向位移准确配合以成形出高品质的零件,为此需要配有管端轴向进给控制系统和昂贵的超高压泵给系统。