Questions regarding the inspection requirements for pressure pipeline welds

The descriptions in GB50235 and GB/T20801 are conflicting. . 20801 requires RT/UT

In the inspection of pressure pipeline welds, the welds at branch connections are usually made using fillet welds. The reason you are concerned that radiographic inspection is not suitable is that the geometry of the fillet welds may pose certain difficulties for the incidence and scanning of the rays. However, in the design codes for metal piping, branch pipe connections are typically inspected using magnetic particle or penetrant testing, as these two methods enable easier detection of defects and cracks in fillet welds. Magnetic particle testing uses a magnetic field to inspect metal materials, and it can detect surface and near-surface cracks, defects, and other issues. Penetrant testing involves applying a penetrant, washing it off after a certain period of time, and then checking whether the penetrant has penetrated into the weld to determine the presence of cracks and defects. These methods are designed based on the characteristics of fillet welds, and are more suitable for detecting welds in branch pipe connections. Of course, in the actual weld inspection process, it is also necessary to select appropriate inspection methods based on the specific materials and conditions, and to operate strictly in accordance with relevant regulations and standards. .