Ultrasonic flaw detector for pipe fitting

The utility model provides a pipe fitting ultrasonic flaw detector which comprises a pipe fitting placing structure, a pipe fitting, a flaw detector and a flaw detector supporting structure, the flaw detector supporting structure is arranged above the pipe fitting placing structure, the pipe fitting placing structure comprises a long-plate-shaped working table and symmetrical bases arranged on the short side of the working table, semicircular opening grooves are formed in the bases, and the pipe fitting placing structure is arranged above the pipe fitting placing structure. The pipe fittings can be placed on the symmetrical bases; the flaw detector supporting structure comprises symmetrical supporting plates arranged on the long side of the workbench, a mounting plate supported by the symmetrical supporting plates, a transmission structure arranged on the lower side of the mounting plate and a flaw detector fixed by the transmission structure, and the flaw detector is used for detecting the pipe fitting. The