Steel Pipe Testing Equipment

Steel having a hollow section that is much longer than the diameter or circumference. According to the cross-sectional shape, it is divided into round, square, rectangular and special-shaped steel pipes; it is divided into carbon structural steel pipe, low-alloy structural steel pipe, alloy steel pipe and composite steel pipe according to the material; it is divided into conveying pipeline and engineering structure according to the purpose. For thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, steel pipes for high-pressure equipment, etc.; according to the production process, it is divided into seamless steel pipes and welded steel pipes, of which seamless steel pipes are divided into hot rolling and cold rolling (pulling). Two kinds of welded steel pipes are divided into straight seam welded steel pipes and spiral seam welded steel pipe testing.

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Ultrasonic Pipe Testing

Ultrasonic flaw detection mainly includes two methods: penetration flaw detection and reflection method. Penetration testing uses two probes, one for transmitting ultrasound and one for receiving the ultrasound. During the inspection, the two probes are placed on both sides of the workpiece, and the internal quality of the workpiece is determined according to the change of energy after the ultrasonic wave penetrates the workpiece. The high-frequency pulse excitation signal generated by the reflection method is applied to the probe, and the generated wave propagates to the inside of the workpiece. If there is a defect inside the workpiece, a part of the wave is reflected back as a defect wave. The bottom wave will also reflect back. According to the position of the emitted wave, the defect wave, and the bottom wave relative to the scanning baseline, the defect position can be determined; the size of the defect can be determined according to the amplitude of the defect wave; the nature of the defect can be analyzed according to the shape of the defect wave; if there is no defect inside the workpiece, only launch wave and bottom wave.