Steam turbine pipe and the pipe

Provided is a steam turbine pipe and a pipe. In the steam turbine pipe, abnormal temperature rising can be avoided and reliability is higher. A steam turbine pipe of an embodiment is a steam turbine pipe in a steam turbine device, including an upper half side main steam pipe that leads steam to a steam turbine; an upper half side main steam control valve that intervenes in the upper half side main steam pipe and adjusting steam flow guided to a high pressure turbine; and a post-valve drain pipe that is connected to the upper half side main steam control valve and leads drain to an outside. The steam turbine pipe 1 further includes: a shut-off valve that intervenes in the post-valve drain pipe 31; and a branching pipe that makes the post-valve drain pipe on the side closer to the upper half side main steam control valve than is the shut-off valve communicate with the upper half side main steam pipe between the upper half side main steam control valve and a high-pressure turbine.