Ultrasonic flaw detection device for steel tubes

The utility model provides an ultrasonic flaw detection device for steel tubes. The ultrasonic flaw detection device comprises a flaw detection main machine, a feeding track and a discharging track, wherein the feeding track and the discharging track are respectively connected with the inlet and the outlet of the flaw detection main machine; the flaw detection main machine comprises a main rack and a computer control system on the main rack; the computer control system is electrically connected with a DSP (Digital Signal Processor), a display, an input device and an alarm device; and the DSP is connected with an ultrasonic sensor through an A/D (Analog-to-Digital) conversion unit. The ultrasonic flaw detection device has the advantages and beneficial effects that by adopting the technical scheme, the detection precision is high, the detection effect is good, the adjustment is convenient, the structure is simple, and the manufacturing is convenient.