Non-destructive testing and radiographic testing of butt welding flanges

Non-destructive testing of butt-welded flanges is a widely used method in the inspection of pressure vessels. It can be applied to all aspects of container manufacturing. In the inspection of raw materials, steel plates for pressure vessels, high-pressure seamless steel pipes, and grade IV with thicknesses exceeding a certain value The forgings of the above steel grades shall be subject to ultrasonic testing, the surface of the groove after thermal processing of grade steel shall be subject to surface testing, and the welding seam on the container shall be subject to radiographic testing or ultrasonic testing. In addition, non-destructive testing is also required in the assessment of welder operation skills, welding process evaluation, product test board, and pressure vessel inspection.