The utility model belongs to the technical field of ultrasonic testing among the nondestructive test, a compressional wave mode pipeline detects electromagnetic acoustic spiral guided wave transduceroutward is related to, including the yoke, grip structure, walking bearing structure, pinch bar structure, permanent magnet and coil, its characterized in that: the yoke is the arch, and yoke extradosupside is connected with and grips the structure, and yoke both sides plane is connected with walking bearing structure, and walking bearing structure is connected with the pinch bar structure, and arc surface connection has a permanent magnet in the yoke, and the permanent magnet is the arch, and the cambered surface is opposite with extrados magnetism in it, and interior arc surface connectionhas the coil. It can produce follows the not electromagnetic acoustic guided wave of equidirectional propagation of pipeline to realize the production of the arbitrary direction spiral guided wave ofpipeline and the detection of arbitrary direction tube way defect.