The main objects of X -ray detection and ultrasonic detection are the docking joints of straight welded steel pipe connections and welded pipes.
There is a tendency to crack after welding delay welding. For a period of time, X -ray detection and ultrasonic detection should be performed. When the supervisor in the pipe has a ring weld, the weld should perform 100 % X -ray detection, and only hidden operations can be performed after testing the pressure.
The welded connector that can be covered with a replenish ring or a supporting pad can be covered by 100 % rays. After passing the test, it can be developed again after passing. Check the NDT in the middle of the scheduled weld. After checking the appearance of the radiation, it is performed and the rear surface of the NDT is detected. The weld can continue to welded after evaluation.
